| I-90 EB over Sunset Creek | 2024 | 139,482 | Good |
| I-90 WB over Sunset Creek | 2024 | 139,482 | Good |
| N Queen Anne Dr over Ravine | 1935 | 125,000 | Fair |
| I-5 over Terrain | 1966 | 122,487 | Fair |
| SW Spokane St over Duwamish River W Waterwy | 1983 | 108,179 | Fair |
| I-5 over E-n Ramp | 1965 | 106,282 | Good |
| I-5 over I-405 NB / SR 518 EB | 1966 | 106,282 | Good |
| I-5 over I-405 NB / SR 518 EB | 1966 | 106,282 | Fair |
| I-5 over Klickitat Dr | 1965 | 106,282 | Fair |
| I-5 over Southcenter Blvd | 1965 | 106,282 | Good |
| I-5 over Southcenter Blvd | 1965 | 106,282 | Good |
| I-5 over Terrain | 1966 | 106,282 | Fair |
| I-5 over Galer-lakeview V | 1961 | 104,978 | Fair |
| I-5 over S 259TH Pl | 1960 | 104,261 | Good |
| I-5 over S 259TH Pl | 1960 | 104,261 | Fair |
| I-5 over SR 516 | 1962 | 104,261 | Fair |
| I-5 over SR 516 | 1962 | 104,261 | Fair |
| I-5 Southbound over Terrain | 1967 | 103,312 | Fair |
| I-5 over Military Rd Rose St | 1966 | 103,312 | Good |
| I-5 over Military Rd Rose St | 1966 | 103,312 | Fair |
| I-5 over Norfolk St Sewer | 1966 | 103,312 | Fair |
| I-5 over Norfolk St Sewer | 1966 | 103,312 | Good |
| I-5 over Orillia Rd/s 188TH St | 1963 | 100,213 | Fair |
| I-5 over Orillia Rd/s 188TH St | 1963 | 100,213 | Good |
| SW Spokane St over Delridge Way SW | 1983 | 98,700 | Fair |
| I-5 over Military Rd | 1959 | 98,173 | Fair |
| I-5 over Military Rd | 1959 | 98,173 | Good |
| I-5 over Military Rd | 1960 | 98,173 | Fair |
| I-5 over Military Rd | 1960 | 98,173 | Fair |
| I-5 over S 288TH St | 1961 | 98,173 | Good |
| I-5 over S 288TH St | 1961 | 98,173 | Fair |
| I-405 over Bn RR (abandoned) | 1972 | 97,875 | Fair |
| I-5 over Lucile St | 1966 | 96,847 | Poor |
| I-5 over Lucile St | 1966 | 96,847 | Fair |
| I-5 over N-w Ramp | 1966 | 96,847 | Fair |
| I-5 over Terrain | 1966 | 96,847 | Fair |
| I-5 NB over Terrain | 1966 | 96,609 | Fair |
| I-5 SB over Terrain | 1967 | 96,609 | Fair |
| I-5 over Terrain | 1966 | 96,609 | Fair |
| I-5 over Terrain | 1967 | 96,609 | Fair |
| I-5 over Terrain | 1966 | 96,609 | Fair |
| I-5 over Duwamish R RR City St | 1964 | 95,981 | Fair |
| I-5 over Duwamish R RR City St | 1964 | 95,981 | Fair |
| SW Spokane St over Delridge Way SW | 1983 | 93,180 | Fair |
| I-5 over NE 155TH St | 1964 | 92,642 | Fair |
| I-5 over NE 155TH St | 1964 | 92,642 | Fair |
| I-5 over Denny Way-lakeview V | 1962 | 92,513 | Fair |
| I-5 over S 336TH St | 1959 | 92,438 | Fair |
| I-5 over S 336TH St | 1959 | 92,438 | Fair |
| I-5 over S 272ND St | 1961 | 92,376 | Good |
| I-5 over S 272ND St | 1961 | 92,376 | Good |
| I-5 over Metro Access | 1990 | 92,302 | Good |
| I-405 over SR 167 | 1964 | 91,705 | Fair |
| I-5 over Terrain | 1963 | 91,632 | Fair |
| I-5 over Lake Wash Ship Canal | 1962 | 90,986 | Fair |
| I-5 over Ravenna Blvd | 1961 | 90,390 | Fair |
| I-5 over Ravenna Blvd | 1961 | 90,390 | Fair |
| I-405 over SE 8TH St | 1971 | 89,237 | Fair |
| I-405 over SE 8TH St Oc | 1972 | 89,237 | Fair |
| I-5 over NE Northgate Way | 1964 | 89,154 | Fair |
| I-5 over NE Northgate Way | 1964 | 89,154 | Good |
| I-5 over Interurban Ave | 1966 | 86,409 | Fair |
| I-5 over Interurban Ave | 1966 | 86,409 | Fair |
| I-405 over NE 116TH St | 2007 | 85,426 | Good |
| I-405 over NE 116TH St | 2006 | 85,426 | Good |
| I-405 over Pedestrian Trail | 1956 | 85,426 | Good |
| I-405 over Pedestrian Trail | 1970 | 85,426 | Good |
| I-405 over Cedar River | 1993 | 85,117 | Fair |
| I-405 over Cedar River | 1994 | 85,117 | Good |
| I-5 over N-103rd Exp Ramp | 1964 | 84,693 | Fair |
| I-405 over Springbrook/oakesdale | 2009 | 83,533 | Good |
| I-405 over N-w Ramp | 1965 | 83,247 | Good |
| I-405 over N-w Ramp | 1966 | 83,247 | Fair |
| I-5 over NE 175TH St | 1964 | 82,639 | Good |
| I-5 over NE 175TH St | 1964 | 82,639 | Good |
| I-405 over NE 85TH St | 1971 | 80,423 | Good |
| I-405 over NE 85TH St | 1971 | 80,423 | Good |
| I-5 over SR 104 / NE 205TH St | 1963 | 77,329 | Good |
| I-5 over SR 104 / NE 205TH St | 1963 | 77,329 | Good |
| I-405 over Green River | 1964 | 77,251 | Fair |
| I-405 over RR & City Streets | 1965 | 77,251 | Fair |
| I-405 over SR 181 | 1964 | 77,251 | Fair |
| I-5 SB over Fallout Shelter | 1963 | 76,058 | Good |
| I-405 over May Creek | 1958 | 74,980 | Good |
| I-405 over May Creek | 2023 | 74,980 | Good |
| I-90 over Mercer Sl | 1970 | 74,410 | Poor |
| I-90 over Mercer Slough | 1940 | 74,410 | Poor |
| Lake Wa BLVD/112TH over I-405 | 2023 | 73,753 | Good |
| I-405 over Coal Creek Parkway SE | 1965 | 71,797 | Fair |
| I-405 over Coal Creek Parkway SE | 1965 | 71,797 | Fair |
| I-5 over Dearborn St | 1965 | 71,171 | Fair |
| I-5 over Dearborn St | 1965 | 71,171 | Good |
| I-5 over King-jackson St | 1965 | 71,171 | Fair |
| I-5 over King-jackson St | 1965 | 71,171 | Fair |
| I-5 over SB Viaduct Sta 2195 | 1964 | 71,171 | Fair |
| I-405 NB over NE 44TH St | 2023 | 70,736 | Good |
| I-5 over SR 18 | 1959 | 70,133 | Fair |
| I-5 over SR 18 | 1959 | 70,133 | Fair |
| I-90 over Richards Rd | 1940 | 69,741 | Fair |
| I-90 over Richards Rd | 1968 | 69,741 | Good |
| I-405 over NE 132ND St | 1970 | 69,115 | Fair |
| I-405 over NE 132ND St | 1970 | 69,115 | Fair |
| Lk Wash BLVD/112TH over I-405 | 2024 | 68,675 | Good |
| EB I-90 over Lake Washington | 1940 | 68,544 | Fair |
| EB I-90 over Lake Washington | 1940 | 68,544 | Good |
| I-90 over Lake Washington | 1940 | 68,544 | Poor |
| W.B. & Rev I-90 over Lake Washington | 1989 | 68,544 | Poor |
| W.B. I-90 over Lake Washington | 1989 | 68,544 | Fair |
| WB I-90 over Lake Washington | 1989 | 68,544 | Fair |
| Westbound I-90 over S Transit RR Lakeview A | 1989 | 68,544 | Good |
| I-405 over Sunset Blvd (old SR 900) | 1963 | 68,154 | Fair |
| I-405 over 115th AVE NE & TRAIL | 1965 | 67,108 | Good |
| I-405 over Bnrr & 115 Ave NE | 1954 | 67,108 | Fair |
| I-405 over Northup Way | 1954 | 67,108 | Good |
| I-405 over Northup Way | 1965 | 67,108 | Good |
| I-405 over SR 520 | 1966 | 67,108 | Good |
| I-405 over SR 520 | 1966 | 67,108 | Good |
| I-90 over East Channel-lk Wash | 1981 | 66,975 | Fair |
| I-90 over East Channel-lk Wash | 1988 | 66,975 | Fair |
| SR 167 over Green River | 1967 | 66,935 | Fair |
| SR 167 over Green River | 1967 | 66,935 | Fair |
| I-5 Sbcd over King Jackson St | 1965 | 66,222 | Fair |
| I-405 over SR 900 / N Park Dr | 1966 | 65,721 | Fair |
| I-405 over SR 900 / N Park Dr | 1966 | 65,721 | Fair |
| I-405 over NE 3RD St | 1993 | 64,434 | Fair |
| I-405 over SR 169 | 1994 | 64,434 | Fair |
| SR 167 over 4TH Ave N | 1967 | 61,426 | Good |
| SR 167 over 4TH Ave N | 1967 | 61,426 | Good |
| SR 167 over Cmstpp RR | 1967 | 61,426 | Good |
| SR 167 over James St | 1967 | 61,426 | Fair |
| SR 167 over James St | 1967 | 61,426 | Good |
| SR 167 over Np Ry | 1967 | 61,426 | Fair |
| SR 167 over Np Ry | 1967 | 61,426 | Fair |
| SR 167 over Railroad & Ped Trail | 1967 | 61,426 | Good |
| SR 99 over Lake Union | 1931 | 61,259 | Fair |
| SR 99 over N 38TH St | 1932 | 61,259 | Fair |
| 15TH Ave NW over NW Leary Way | 1958 | 60,000 | Fair |
| 15TH Ave W over Ship Canal | 1917 | 60,000 | Fair |
| I-5 NB over James Cherry Revers | 1964 | 59,630 | Fair |
| SR 518 over 42ND Ave S | 1963 | 59,545 | Good |
| SR 518 over 42ND Ave S | 1966 | 59,545 | Good |
| I-90 Westbound over Sound Transit Railroad | 1988 | 56,847 | Good |
| I-90 over Rainier Ave | 1988 | 56,847 | Fair |
| I-90 over Rainier Ave S | 1992 | 56,847 | Good |
| I-405 over SR 522 Sammamish R | 1968 | 56,311 | Fair |
| I-405 over SR 522 Sammamish R | 1968 | 56,311 | Fair |
| I-90 over W Lake Sammamish Pkwy | 1972 | 56,289 | Fair |
| I-90 over W Lake Sammamish Pkwy | 1972 | 56,289 | Fair |
| SR 167 over Meeker St | 1967 | 55,901 | Fair |
| SR 167 over Meeker St | 1967 | 55,901 | Fair |
| SR 167 over SR 516 | 1967 | 55,901 | Fair |
| SR 167 over SR 516 | 1967 | 55,901 | Fair |
| I-405 over North Creek | 1968 | 55,889 | Good |
| SR 513 over Montlake Cut | 1924 | 55,497 | Fair |
| I-5 Nbcd over King Jackson St | 1965 | 55,400 | Good |
| Fauntleroy Way over Admiral Way Avalon Way | 1963 | 55,000 | Fair |
| SR 167 over 84TH Ave South | 1967 | 53,546 | Fair |
| SR 167 over 84TH Ave South | 1967 | 53,546 | Good |
| SR 167 over Third Ave SW | 1977 | 52,419 | Good |
| SR 18 over Peasley Canyon Rd | 1958 | 52,049 | Fair |
| SR 18 over W Valley Hwy(old SR 181) | 1957 | 52,049 | Good |
| 15TH Ave W over Shilshole Ave NW | 1940 | 52,000 | Fair |
| 15TH Ave W over Ship Canal RR | 1940 | 52,000 | Fair |
| SR 18 over Cmstpp RR | 1955 | 50,541 | Good |
| SR 18 over UP RR | 1972 | 50,541 | Good |
| S 320TH St over I-5 | 1960 | 49,879 | Fair |
| I-5 over Sbcd Viaduct Sta 2195 | 1964 | 49,417 | Fair |
| SR 167 over Ellingson Road | 1977 | 48,865 | Fair |
| SR 167 over First Ave N | 1977 | 48,865 | Fair |
| I-405 over I-90 | 2008 | 48,783 | Good |
| I-405 over I-90 Factoria | 1969 | 48,783 | Fair |
| NE 8TH St over I-405 | 2003 | 48,783 | Good |
| SR 99 over Duwamish River | 1956 | 48,204 | Fair |
| 148TH Ave over SR 520 | 1981 | 46,948 | Fair |
| SR 99 over Duwamish River | 1996 | 46,303 | Fair |
| I-90 over Issaquah Creek | 1970 | 46,269 | Good |
| I-90 over Issaquah Creek | 1970 | 46,269 | Good |
| I-405 over SR 515 | 1964 | 45,853 | Good |
| SR 520 over 116TH Ave NE | 1966 | 45,466 | Fair |
| SR 520 over 116TH Ave NE | 1966 | 45,466 | Fair |
| SR 520 over 120TH Ave NE | 1971 | 45,466 | Fair |
| SR 520 over 124 Ave NE - NW Ramp | 1971 | 45,466 | Fair |
| SR 520 over 124 Ave NE - NW Ramp | 1971 | 45,466 | Good |
| SR 520 over 130TH Ave NE | 1970 | 45,466 | Good |
| SR 520 over 130TH Ave NE | 1970 | 45,466 | Fair |
| SR 520 over 140TH Ave NE | 1972 | 45,466 | Good |
| SR 520 over 140TH Ave NE | 1972 | 45,466 | Fair |
| SR 520 over NE 24TH St | 1972 | 45,466 | Good |
| SR 520 over NE 24TH St | 1998 | 45,466 | Fair |
| SR 520 over Northup Way | 1971 | 45,466 | Good |
| SR 520 over Pedestrian Trail | 1966 | 45,466 | Good |
| SR 520 over Pedestrian Trail | 1969 | 45,466 | Fair |
| SR 167 NB over SR 18 | 1973 | 45,408 | Good |
| SR 167 over SR 18 | 1973 | 45,408 | Good |
| SB Airport Expy over S 170TH St | 1972 | 45,000 | Fair |
| N.w.sammamish Road over Issaquah Creek | 1996 | 44,000 | Fair |
| S 180TH St over SR 167 | 1964 | 43,450 | Fair |
| NB Airport Expy over Substation | 2010 | 43,000 | Good |
| SR 520 over Pkwy & Sammamish River | 1995 | 42,985 | Good |
| SR 520 over Wls Pkwy & Sammamish R | 1976 | 42,985 | Fair |
| S Spokane St over E Marginal Wy 1ST 4TH | 1941 | 42,350 | Fair |
| Spokane St Viaduct over E Marginal Wy 1ST 4TH | 2012 | 42,350 | Good |
| SR 18 over Npry & City Streets | 1956 | 41,223 | Fair |
| EB I-90 over Tibbetts Creek | 2004 | 40,835 | Good |
| WB I-90 over Tibbetts Creek | 2004 | 40,835 | Good |
| SR 900 over I-90 | 1970 | 40,805 | Fair |
| SR 518 over SR 509 | 1971 | 40,718 | Fair |
| I-5 Nbcd Ramp over Terrain | 1965 | 40,483 | Good |
| SR 202 over Little Bear Creek | 2017 | 40,454 | Good |
| Airport Nb-sb Loop over Airport Expressway | 2010 | 40,000 | Good |
| S Boeing Access Rd over Airport Way Bar Ramp | 1952 | 40,000 | Poor |
| I-5 over Exp Galer-lakeview V | 1961 | 39,824 | Fair |
| SR 99 over Detention Vault | 2010 | 39,625 | Good |
| NE 124TH St over I-405 | 1969 | 39,499 | Fair |
| 116TH Way NE over Trib to Juanita CR | 2023 | 38,957 | Good |
| I-5 P1 15559 Ramp over I-5 Hov Lane | 1966 | 37,896 | Fair |
| I-90 over W-s Ramp Richard Rd | 1969 | 37,886 | Good |
| SR 99 over N 50TH St | 1933 | 37,273 | Fair |
| S Boeing Access Rd over I-5 | 1966 | 37,060 | Fair |
| Eastlake Ave NE over NE 40TH St Burke Gilman | 1930 | 37,000 | Fair |
| Logan Ave N over Cedar River | 1973 | 37,000 | Fair |
| I-405 over I-5 | 1965 | 36,877 | Fair |
| SR 202 over Bear Creek | 1978 | 36,736 | Good |
| I-5 Rev Exp Lanes over Ravenna Blvd | 1961 | 36,725 | Fair |
| 405 NE Ramp over NE Ramp over Ped Path | 2021 | 36,070 | Good |
| I-405 Ramp over EB I-90 Ramp | 1969 | 36,070 | Good |
| Eastlake Ave NE over Portage Bay Pl E | 1930 | 36,000 | Poor |
| S 212th ST over Green River | 1966 | 36,000 | Fair |
| NE 124TH St over RAMP/120TH Ave | 1990 | 35,856 | Good |
| I-90 Wcd Ramp over Ramps Rail City Street | 1965 | 35,848 | Fair |
| SR 522 over Lyon Creek | 2015 | 35,374 | Good |
| SR 522 over Swamp Creek | 2008 | 35,060 | Good |
| E Lake Sammamish over N Fork Issaquah Creek | 2017 | 35,000 | Good |
| Eastlake Ave NE over NE Pacific St | 1930 | 35,000 | Fair |
| Eastlake Ave NE over Portage Bay | 1915 | 35,000 | Poor |
| Terminal Drive NB over S 170TH St | 2010 | 35,000 | Good |
| I-90 over E Fk Issaquah CR | 1976 | 34,797 | Fair |
| I-90 over E Fk Issaquah CR | 1976 | 34,797 | Fair |
| I-90 over E Fk Issaquah Creek | 1976 | 34,797 | Fair |
| I-90 over E Fk Issaquah Creek | 1976 | 34,797 | Good |
| I-90 over E Fk Issaquah Creek | 1976 | 34,797 | Fair |
| I-90 over E Fk Issaquah Creek | 1976 | 34,797 | Good |
| SR 164 over R St | 1970 | 34,579 | Good |
| Avondale Road over Bear Creek | 1979 | 34,500 | Fair |
| South 43RD Street over Hospital Access Road | 1992 | 34,442 | Fair |
| NB Airport Expy over Nae Aoa Tunnel | 2010 | 34,200 | Good |
| I-90 over E Fk Issaquah CR | 1951 | 34,108 | Fair |
| I-90 over E Fk Issaquah CR | 1975 | 34,108 | Good |
| Ramp I-5 to I-405 over Ramp SR 518 to I-5 | 1966 | 34,031 | Good |
| Fremont Ave N over Access Rd Parking | 2009 | 34,000 | Good |
| I-90 over High Point Rd | 1975 | 33,894 | Fair |
| I-90 over High Point Rd | 1975 | 33,894 | Fair |
| I-90 over Game Crossing | 1976 | 33,803 | Poor |
| I-90 over Game Crossing | 1976 | 33,803 | Fair |
| SR 99 over SR 518 Riverton Hts | 1962 | 33,632 | Fair |
| SR 99 over N 63RD St | 1932 | 33,359 | Fair |
| I-405 N-e Ramp over 116TH Ave NE | 1993 | 32,900 | Good |
| SR 520 over Peat Bog | 1993 | 32,900 | Fair |
| Interurban Ave S over Green River | 1963 | 32,860 | Fair |
| I-90 over 4TH Ave NW & Trail | 1971 | 32,550 | Fair |
| I-90 over 4TH Ave NW & Trail | 1971 | 32,550 | Fair |
| I-90 over Front St N | 1971 | 32,550 | Fair |
| I-90 over Front Street | 1971 | 32,550 | Good |
| S Boeing Access Rd over Bnrr | 1945 | 32,504 | Fair |
| I-5 Sbcd over Dearborn St | 1965 | 32,408 | Fair |
| Coal Creek Pkwy over May Creek | 2009 | 32,000 | Fair |
| SW Admiral Way over Ravine Fairmount Ave | 1949 | 32,000 | Good |
| 15TH St Northwest over Bnrr & B St NW | 1972 | 31,879 | Fair |
| 15TH St Northwest over UPRR | 1972 | 31,879 | Poor |
| SR 161 over I-5 | 1959 | 31,811 | Fair |
| SR 18 over BNSF RR Spur | 1986 | 31,748 | Fair |
| SR 18 over BNSF RR Spur | 1960 | 31,748 | Good |
| SR 18 over M Street | 1984 | 31,748 | Good |
| NE 80TH St over I-5 I-5 Exp Lns Ramps | 1964 | 31,375 | Fair |
| S 277TH St over SR 167 | 1968 | 31,266 | Fair |
| Coal Creek Parkway over Coal Creek | 2014 | 31,258 | Fair |
| I-90 over Raging River | 1975 | 31,252 | Poor |
| I-90 over Raging River | 1975 | 31,252 | Good |
| SR 516 over Wetlands | 1994 | 31,133 | Good |
| S 212TH St over SR 167 & Springbrook Ck | 1973 | 31,076 | Fair |
| 61ST Ave S over I-405 | 1962 | 31,000 | Good |
| I-90 over Mercer Slough | 1970 | 31,000 | Fair |
| SW Admiral Way over Ravine Fairmount Ave | 1927 | 31,000 | Fair |
| SR 181 over Mill Creek | 1922 | 30,762 | Good |
| SR 181 over Slough | 1922 | 30,762 | Good |
| I-5 over Nbcd Viaduct Sta 2195 | 1964 | 30,675 | Fair |
| I-5 S-e Ramp over I-5 Ramps Railroad | 1965 | 30,627 | Fair |
| I-90 over E Fk Issaquah Creek | 1976 | 30,622 | Fair |
| I-90 over E Fk Issaquah Creek | 1976 | 30,622 | Good |
| I-90 over E Fk Issaquah Creek | 1976 | 30,622 | Fair |
| I-90 over E Fk Issaquah Creek | 1976 | 30,622 | Fair |
| Holman Rd NW over 8TH Ave NW | 1975 | 30,500 | Fair |
| 160TH/BRICKYARD Rd over I-405 | 1969 | 30,405 | Fair |
| SR 202 over Evans Creek | 2007 | 30,193 | Good |
| Front St N. over E.fk.issaquah Ck. | 1970 | 30,000 | Fair |
| Leary Way over Sammamish River | 1992 | 30,000 | Fair |
| Madison St over I-5 | 1964 | 30,000 | Fair |
| NE 4TH St over I-405 | 2003 | 29,600 | Fair |
| Fremont Ave N over Ship Canal | 1917 | 29,300 | Fair |
| SR 520 over Lake Washington | 2016 | 28,957 | Fair |
| SR 520 over Lake Washington | 2016 | 28,957 | Good |
| SR 520 over Lake Washington | 2016 | 28,957 | Good |
| SR 99 over City Streets & Railroad | 2011 | 28,886 | Good |
| SR 99 over SR 519 (atlantic St)/rr | 2011 | 28,886 | Good |
| SR 99 over Terrain | 2011 | 28,886 | Good |
| NE 45TH St over I-5 | 1960 | 28,856 | Fair |
| SR 519 over Stadium Bnsfrr 4TH Ave | 2002 | 28,680 | Fair |
| SR 99 over Dexter Way N | 1930 | 28,629 | Fair |
| Spokane St EB Lane over I-5 | 1966 | 28,260 | Fair |
| SR 202 over SR 522 | 1989 | 28,216 | Good |
| SR 518 over 8TH Ave | 1970 | 28,203 | Fair |
| SR 518 over Des Moines Way S | 1970 | 28,203 | Fair |
| SR 18 Eastbound over Soosette Creek | 1997 | 28,147 | Good |
| SR 18 Westbound over Soosette Creek | 1997 | 28,147 | Good |
| SR 18 over Green River | 1959 | 28,147 | Fair |
| SR 18 over Green River | 1995 | 28,147 | Good |
| SR 18 W-s Ramp over I-5 & SR 18 | 2012 | 28,117 | Fair |
| Lakemont Blvd. SE over Coal Creek | 2024 | 28,015 | Good |
| 4TH Ave S over Argo RR Yard | 1933 | 28,000 | Poor |
| SW Grady Way over Springbrook Creek | 1987 | 28,000 | Fair |
| N-n Ramp over SR 515 | 2017 | 27,969 | Good |
| S-s Ramp over SR 167 Ramp | 2002 | 27,736 | Good |
| SR 516 over Big Soos Creek | 1994 | 27,719 | Good |
| SW 43RD Street over Springbrook Creek | 1983 | 27,713 | Fair |
| SR 18 over Bnrr Auburn-blk Diamond | 1959 | 27,343 | Good |
| SR 18 over Bnrr Auburn-blk Diamond | 1995 | 27,343 | Good |
| 405 N-e Ramp over 116TH Ave NE | 2011 | 27,000 | Good |
| 4TH Ave S over Parking Garage | 1910 | 27,000 | Poor |
| NE 50TH St over I-5 | 1962 | 27,000 | Fair |
| Redmond Way over 154TH Ave NE | 1992 | 27,000 | Good |
| Redmond Way over Sammamish R | 1972 | 27,000 | Fair |
| Ramp over Railroad | 2023 | 26,910 | Good |
| NE 40TH St over SR 520 | 1980 | 26,907 | Fair |
| SR 515 over Garrison Creek | 1993 | 26,777 | Good |
| 15TH St NW over SR 167 | 1972 | 26,767 | Fair |
| SR 520 over 108TH Ave NE | 1966 | 26,760 | Good |
| SR 520 over 108TH Ave NE | 2013 | 26,760 | Good |
| SR 520 over Yarrow Creek | 2014 | 26,760 | Good |
| SR 523 / NE 145TH over I-5 | 1964 | 26,758 | Good |
| SR 522 over 195TH Street | 1986 | 26,704 | Fair |
| S Jackson St over St Tunnel | 1987 | 26,700 | Fair |
| I-90 over Game Crossing | 1976 | 26,372 | Good |
| I-90 over Game Crossing | 1976 | 26,372 | Good |
| I-90 over W Snoqualmie Ic | 1976 | 26,372 | Good |
| I-90 over W Snoqualmie Ic | 1976 | 26,372 | Fair |
| SR 18 over Kent-black Diamond Rd | 1996 | 26,257 | Good |
| SR 18 over Kent-black Diamond Rd SE | 1959 | 26,257 | Fair |
| SR 18 over Soos CR | 1959 | 26,257 | Good |
| SR 18 over Soos Creek | 1996 | 26,257 | Good |
| Grady Way over UPRR & Bnrr | 1986 | 26,000 | Fair |
| NE 45TH St over 25TH Ave NE | 1976 | 26,000 | Good |
| S 277TH St over BNSF RR | 2003 | 26,000 | Good |
| S 277TH St over Union Pacific RR | 2003 | 26,000 | Good |
| W Dravus St over Railroad Yards | 1935 | 26,000 | Fair |
| A Street SE over Stuck River (white Riv) | 1991 | 25,650 | Fair |
| NE 124TH St over Sammamish River | 2004 | 25,500 | Good |
| SR 18 over F St SE | 1958 | 25,441 | Good |
| SR 18 over SR 164 | 1959 | 25,441 | Good |
| SR 18 over Raging River | 1962 | 25,373 | Good |
| SR 18 over Terrain | 2001 | 25,373 | Good |
| SR 518 over W-s Ramp | 1971 | 25,358 | Good |
| Avondale Road NE over Cottage Lake Creek | 1994 | 25,321 | Fair |
| SR 522 over Sammamish River | 1968 | 25,269 | Fair |
| NE 195TH Street over North Creek | 1984 | 25,173 | Fair |
| SR 509 over Glendale Way | 1968 | 25,061 | Good |
| 15TH St SW over SR 167 | 1975 | 25,000 | Good |
| W Meeker Street over Green River | 1958 | 25,000 | Poor |
| I-90 over 424TH Ave SE | 1976 | 24,954 | Fair |
| I-90 over 424TH Ave SE | 1976 | 24,954 | Fair |
| I-90 over S Fk Snoqualmie River | 1975 | 24,954 | Good |
| I-90 over S Fk Snoqualmie River | 1975 | 24,954 | Good |
| Avondale Road over Bear Creek | 1995 | 24,768 | Fair |
| NE 4TH St over City Street and Sbcd | 1989 | 24,635 | Good |
| Central Way over Np Ry | 1965 | 24,500 | Fair |
| Roosevelt Way NE over NE Campus Parkway | 1949 | 24,500 | Fair |
| I-5 Sbcd over Terrain | 1967 | 24,462 | Fair |
| SR99 over W. Fk. HYLEBOS CREEK | 2015 | 24,228 | Good |
| Totem Lake Blvd over Trib to Juanita CR | 2023 | 24,107 | Good |
| I-5 SB Off Ramp over S-e Ramp to Columbia Way | 1967 | 24,104 | Fair |
| W Valley Hwy over Mill CR | 1915 | 24,100 | Fair |
| 68th Ave NE over Sammamish River | 1970 | 24,000 | Fair |
| OFF RAMP 4th AVE over South Spokane Street | 2010 | 24,000 | Good |
| Pine St-boren Ave over I-5 | 1965 | 24,000 | Good |
| Union Hill Road over Bear Creek | 1994 | 23,866 | Fair |
| Avondale Road over Bear Creek | 1995 | 23,710 | Fair |
| I-405 N-e Ramp over Sammamish River | 1968 | 23,617 | Fair |
| Denny Way over I-5 | 1962 | 23,500 | Good |
| N.w.gilman Blvd. over Issaquah Ck. | 1940 | 23,500 | Fair |
| Ramp to I-5 Nb/sb over City Sts Ramp & RR | 1966 | 23,338 | Fair |
| E Lake Sammamish over Drainage Ditch | 1961 | 23,000 | Good |
| Issaquah F.c. Road over Old Vaughn Hill Road | 1985 | 23,000 | Fair |
| Novelty Hill Rd over Bear Creek | 1974 | 23,000 | Fair |
| I-90 over SR 18 | 1963 | 22,901 | Fair |
| I-90 over SR 18 | 1975 | 22,901 | Fair |
| Bellevue Way NE over SR 520 | 2014 | 22,813 | Good |
| Highland Drive over North Fork Issaquah CR | 2002 | 22,600 | Fair |
| W-n Ramp to I-405 over S-w Ramp to I-90 | 1968 | 22,417 | Fair |
| Pacific Highway over Duwamish River | 2000 | 22,406 | Fair |
| E-n Ramp over I-5 | 1966 | 22,370 | Fair |
| I-5 over Terrain | 1967 | 22,370 | Fair |
| I-90 over Mercer Slough | 1970 | 22,361 | Fair |
| SR 599 over 133RD St | 1966 | 22,284 | Fair |
| SR 599 over 133RD St | 1966 | 22,284 | Good |
| SR 599 over 42ND Ave S | 1968 | 22,284 | Fair |
| SR 599 over 42ND Ave S / Macadam Rd | 1968 | 22,284 | Good |
| S 277TH St over Green Rv & Green Rv Rd. | 2000 | 22,100 | Good |
| SR 169 over Cedar River | 1950 | 22,007 | Fair |
| SR 169 over Cedar River | 1991 | 22,007 | Good |
| SR 900 over Tibbetts CR | 1975 | 22,004 | Good |
| 12 Ave S over Dearborn St | 1917 | 22,000 | Fair |
| 3RD St SW over A St SW | 2002 | 22,000 | Fair |
| 3RD St SW over BNSF RR | 2002 | 22,000 | Fair |
| Bronson Way N over Cedar R | 1940 | 22,000 | Fair |
| Seattle Blvd over Sound Transit Tunnel | 1910 | 22,000 | Fair |
| NE 8TH Street over Kelsey Creek | 2018 | 21,950 | Good |
| I-90 over SR 202 | 1976 | 21,667 | Fair |
| I-90 over SR 202 | 1975 | 21,667 | Fair |
| I-90 Ramp to I-405 over I-90 Mainline | 1969 | 21,663 | Fair |
| SR 509 over S 128TH St | 1968 | 21,456 | Fair |
| SR 99 over N 46TH St | 1933 | 21,386 | Fair |
| Issq-hobart Rd SE over Fifteen Mile Creek | 1949 | 21,368 | Fair |
| 8TH Street NE over Green River | 1973 | 21,100 | Fair |
| W Dravus St over 15TH Ave W | 1959 | 21,000 | Fair |
| W Emerson Pl over Railroad | 1986 | 21,000 | Fair |
| I-5 Nbcd over Dearborn St | 1965 | 20,967 | Fair |
| I-90 EB over Bus Depot Ped Path Bldns | 2003 | 20,960 | Fair |
| I-90 over I-5 | 1966 | 20,960 | Fair |
| I-90 over I-5 | 1966 | 20,960 | Fair |
| NE 12 St over I-405 | 2011 | 20,700 | Good |
| 15 Street NW over Mill Creek Wetland | 2014 | 20,648 | Fair |
| I-90 over Bnrr (removed) | 1976 | 20,619 | Fair |
| I-90 over Bnrr (removed) | 1976 | 20,619 | Fair |
| 98 Ave NE over Forbes Creek | 1974 | 20,400 | Good |
| SR 18 over Jenkins Creek | 2002 | 20,290 | Good |
| SR 18 over Jenkins Creek | 2002 | 20,290 | Good |
| SR 18 over SE 240TH St | 2002 | 20,290 | Good |
| SR 18 over SE 240TH St | 2002 | 20,290 | Good |
| NE 72ND Place over I-405 | 1970 | 20,179 | Good |
| NE 130TH St over I-5 | 1964 | 20,062 | Fair |
| NE117TH St over I-5 | 1964 | 20,000 | Good |
| State Route 181 over Mill CR | 1954 | 20,000 | Fair |
| W Garfield St over Bnrr | 1930 | 20,000 | Fair |
| West Valley Hwy over Green River | 1968 | 20,000 | Fair |
| W Emerson St over RR Tracks Alley | 1949 | 19,800 | Fair |
| SR 169 over Cedar River | 1994 | 19,730 | Fair |
| S-w Ramp over W Valley Hwy S Mill CR | 1973 | 19,506 | Fair |
| R St SE over Stuck River | 1967 | 19,500 | Fair |
| W Garfield St over 15TH Ave W | 1957 | 19,500 | Fair |
| SR 520 over Lake Washington | 2017 | 19,472 | Good |
| SR 520 over Lake Washington | 2023 | 19,472 | Good |
| I-5 Express Lanes over James & Cherry Streets | 1964 | 19,438 | Fair |
| SR 509 over Des Moines Ck/mem Trail | 2007 | 19,398 | Good |
| Highlands Dr NE over Pedestrian Tunnel | 2003 | 19,258 | Good |
| I-90 over S Fk Snoqualmie River | 1971 | 19,222 | Good |
| I-90 over S Fk Snoqualmie River | 1971 | 19,222 | Good |
| I-90 W-s Ramp over I-5 | 1965 | 19,205 | Good |
| I-5 S-w Ramp over Terrain | 1967 | 19,202 | Fair |
| SR 18 over Jenkins Creek | 2002 | 19,144 | Fair |
| SR 520 over SR 202 & Bike Path | 1995 | 19,104 | Fair |
| 195TH St over I-405 | 1968 | 19,064 | Fair |
| 1ST Ave S over Argo RR Yard | 1935 | 19,000 | Fair |
| I-90 EB over Talapus CR Tributary | 1972 | 18,981 | Good |
| I-90 EB over Talapus Creek | 1972 | 18,981 | Good |
| I-90 WB over Talapus CR Tributary | 1972 | 18,981 | Good |
| I-90 WB over Talapus Creek | 1972 | 18,981 | Good |
| SR 599 over I-5 (SB Lanes Only) | 1966 | 18,948 | Good |
| 150TH Ave SE over I-90 | 1973 | 18,919 | Fair |
| 150TH Ave SE over I-90 | 1973 | 18,919 | Good |
| EB I-90 over Olallie Creek | 1972 | 18,894 | Fair |
| I-90 EB over Humpback Creek | 1972 | 18,894 | Poor |
| I-90 over Avalanche Path | 1971 | 18,894 | Fair |
| I-90 over Denny Creek | 1981 | 18,894 | Fair |
| I-90 over Garcia Interchange | 1976 | 18,876 | Fair |
| I-90 over Garcia Interchange | 1974 | 18,876 | Good |
| I-90 over Homestead Valley Rd | 1974 | 18,876 | Fair |
| I-90 over Homestead Valley Rd | 1974 | 18,876 | Good |
| I-90 over S Fk Snoqualmie R | 1974 | 18,876 | Fair |
| I-90 over S Fk Snoqualmie R | 1974 | 18,876 | Fair |
| I-90 over S Fk Snoqualmie R | 1974 | 18,876 | Poor |
| I-90 over S Fk Snoqualmie R | 1974 | 18,876 | Good |
| I-90 over S Fk Snoqualmie R | 1974 | 18,876 | Good |
| I-90 over So Fk Snoqualmie R | 1976 | 18,876 | Good |
| 83RD Ave S over Cattle Crossing | 1990 | 18,758 | Fair |
| 83RD Ave S over Green River | 1990 | 18,758 | Fair |
| I-90 over Bandera Rd | 1972 | 18,753 | Poor |
| I-90 over Bandera Rd | 1972 | 18,753 | Poor |
| 154TH Place SE over Cedar River | 2005 | 18,726 | Good |
| I-90 over County Road(old I-90) | 1971 | 18,692 | Fair |
| I-90 over S Fk Snoqualmie R | 1971 | 18,692 | Fair |
| I-5 over Klickitat Drive | 1998 | 18,644 | Good |
| SR 99 over Spokane St | 1959 | 18,505 | Fair |
| 12TH Ave S over I-90 | 1968 | 18,400 | Fair |
| Newport Way S.W. over Issaquah Creek | 2000 | 18,300 | Good |
| SR 520 W-s Ramp over I-5 | 1962 | 18,129 | Fair |
| SR 520 over Portage Bay | 1963 | 18,129 | Fair |
| NE 116TH St over Railroad | 2012 | 18,100 | Good |
| I-90 over 468TH Ave SE | 1971 | 18,090 | Good |
| I-90 over 468TH Ave SE | 1971 | 18,090 | Fair |
| NE 12TH St over Parking Lot | 1971 | 18,028 | Fair |
| 148TH Ave NE over Hillside Slope | 1991 | 18,000 | Fair |