| Is 64 E over Cst Mccausland Ave | 2008 | 159,584 | Good |
| Is 70 E over Mo 367 | 1999 | 137,346 | Fair |
| Is 55 S over Cst S Lenore K Sulliva | 1963 | 120,209 | Fair |
| Is 70 E over Cst Branch St | 1999 | 113,474 | Fair |
| Is 70 E over Cst Angelica St | 1999 | 100,176 | Fair |
| Is 70 E over St Louis Terminal | 1999 | 95,646 | Fair |
| Is 70 E over Cst Grand Blvd | 1999 | 95,308 | Fair |
| Is 55 S over River Des Peres Cst Ger | 1963 | 92,999 | Good |
| Is 70 E over Cst Prairie Ave | 1998 | 90,791 | Fair |
| Is 55 S over Cst Koeln Ave | 1963 | 88,981 | Fair |
| Is 44 E over Cst 4TH St Rp IS44W T | 1958 | 64,006 | Fair |
| Is 64 E over Cst N Sarah St | 1982 | 59,295 | Fair |
| Is 64 E over Cst Vandeventer Ave Cst | 1956 | 59,295 | Poor |
| Is 64 E over Rp Vandeventer Ave to | 1956 | 59,295 | Fair |
| Is 64 W over Cst N Sarah St | 1981 | 58,558 | Fair |
| Is 44 E over Cst Park Ave Mo 100 | 1952 | 53,654 | Fair |
| Is 44 W over Cst Park Ave Mo 100 | 1976 | 53,654 | Fair |
| Is 44 W over Cst Ellendale Ave River | 1971 | 51,357 | Fair |
| Is 44 E over Cst Wabash Ave River De | 1971 | 50,999 | Fair |
| Is 55 N over Cst 2ND St | 1965 | 50,725 | Fair |
| Is 55 N over Cst Broadway St | 1965 | 50,725 | Fair |
| Is 44 W over Cst Hampton Ave | 1969 | 50,216 | Fair |
| Is 44 W over Cst Sublette Ave | 1969 | 50,216 | Fair |
| Kingshighway over UP & BNSF RR | 1993 | 50,000 | Good |
| Is 44 W over Cst 39TH St | 2018 | 49,558 | Good |
| Is 44 W over Cst Thurman Ave | 2018 | 49,558 | Good |
| Is 44 W over Cst Tower Grove Ave | 1970 | 49,558 | Fair |
| Is 44 W over Cst Vandeventer Ave | 1970 | 49,558 | Fair |
| Is 44 E over Cst Southwest Ave | 1971 | 49,081 | Fair |
| Is 44 E over Cst Kingshighway Blvd | 2018 | 48,597 | Good |
| Is 44 E over Cst Sublette Ave | 1969 | 48,597 | Fair |
| Is 44 W over Cst Jefferson Ave | 2019 | 48,225 | Good |
| Is 44 E over Is 55 Cst 12TH St Is | 1965 | 48,224 | Fair |
| Is 44 E over Rp Truman Pkwy to IS55S | 1965 | 48,224 | Fair |
| Is 270 E over Rt H | 2023 | 48,146 | Good |
| Is 44 E over Cst Jefferson Ave | 2019 | 48,129 | Good |
| Is 55 N over Cst Potomac St | 1965 | 47,230 | Fair |
| Is 44 E over Cst 39TH St | 2018 | 46,909 | Good |
| Is 44 E over Cst Thurman Ave | 2018 | 46,909 | Good |
| Is 44 E over Cst Tower Grove Ave | 1970 | 46,909 | Fair |
| Is 44 E over Cst Hampton Ave | 1969 | 46,261 | Fair |
| Is 44 E over Cst Vandeventer Ave | 1970 | 46,208 | Fair |
| Is 44 E over Union Pacific RR | 1970 | 46,208 | Fair |
| Is 55 S over Cst Gasconade St | 1965 | 45,944 | Fair |
| Kingshighway over Metrolink | 1937 | 45,900 | Poor |
| Is 55 S over Cst 2ND St | 1965 | 45,727 | Fair |
| Is 55 S over Cst Potomac St | 1965 | 45,727 | Fair |
| Is 70 E over Cst Brdway Levee Rd | 2010 | 45,218 | Good |
| Kingshighway Blvd over Cst Clayton Ave | 2008 | 45,152 | Good |
| Is 64 W over Cst Clayton Ave Is 64 | 1982 | 45,038 | Fair |
| Is 55 N over Mo Pac RR | 1963 | 44,800 | Poor |
| Is 55 S over Mo Pac RR | 1963 | 44,181 | Fair |
| Hampton Ave over Rvr Des Peres UP RR Bn | 1986 | 44,150 | Fair |
| Is 44 W over Cst Southwest Ave | 1971 | 44,048 | Fair |
| Is 44 W over Cst Kingshighway Blvd | 2018 | 43,840 | Good |
| Is 44 W over Union Pacific RR | 1970 | 43,840 | Fair |
| Is 55 N over Cst Broadway St | 1963 | 43,823 | Fair |
| Is 55 N over Cst Bates St | 1963 | 43,286 | Fair |
| Is 55 N over Cst Virginia Ave | 1963 | 43,286 | Good |
| Is 55 N over Cst Gasconade St | 1965 | 42,845 | Fair |
| Is 55 S over Cst Bates St | 1963 | 41,449 | Fair |
| Mo 366 E over River Des Peres | 1977 | 40,949 | Fair |
| Is 55 S over Cst Virginia Ave | 1963 | 40,947 | Good |
| Is 55 S over Cst Brdway St | 1965 | 40,531 | Fair |
| Is 55 S over Cst Broadway St | 1963 | 40,525 | Fair |
| Is 64 E over Cst Market St | 1963 | 39,729 | Fair |
| Kingshighway Blvd over Daggett Ave | 2015 | 39,200 | Good |
| Kingshighway Blvd over UP RR | 2015 | 39,200 | Good |
| Kingshighway Blvd over Is 64 | 2008 | 36,109 | Fair |
| Concourse Dr S over Pedestrian Tunnel | 2009 | 34,918 | Good |
| Is 64 E over Is 44 Cst 4TH St Cst | 1964 | 34,244 | Poor |
| Grand Ave over Forest Park Pkwy | 1961 | 34,100 | Fair |
| Lindell-union over Forest Park Pkwy | 1961 | 33,500 | Poor |
| Concourse Dr S over Is 64 | 2008 | 32,584 | Fair |
| Is 55 S over Is 44 Rp IS44E to Mem | 2015 | 32,335 | Good |
| Is 64 W over Is 44 Cst 4TH St Cst | 1964 | 32,011 | Fair |
| Hampton Ave S over Rp IS64E to Oakview Pl | 2008 | 31,099 | Fair |
| Grand Ave over Bernard St | 2011 | 30,000 | Good |
| Grand Ave over Gratiot St | 2011 | 30,000 | Good |
| Grand Ave over UPRR Metro Scott Ave | 2011 | 30,000 | Good |
| Lindell-union over Metrolink | 1929 | 30,000 | Poor |
| Forest Park Pkwy over Metrolink | 2017 | 29,920 | Good |
| Broadway Ave over Trra RR | 1977 | 28,530 | Fair |
| Kingshighway Blvd over Trra RR | 2003 | 27,000 | Good |
| Is 270 E over Mississippi Rvr | 2024 | 23,688 | Good |
| Is 70 W over Rp IS44E to 10TH St | 2013 | 22,974 | Good |
| Is 270 W over Mississippi Rvr | 2024 | 22,740 | Good |
| Is 270 W over Rt H | 2023 | 22,740 | Good |
| Is 55 N over Cst 2ND St | 2016 | 22,463 | Good |
| Is 70 E over Is 44 | 2013 | 22,244 | Good |
| Morganford Rd over Rvr Des Peres | 1979 | 22,010 | Fair |
| Jefferson Ave over Metrolink Trra & | 2007 | 21,700 | Good |
| Loughborough Ave over UP RR | 1957 | 21,390 | Poor |
| Jefferson Ave S over Is 64 Rp NOR64 to IS64W | 2013 | 21,307 | Fair |
| Tucker Blvd over Trra & UP RR | 1979 | 21,000 | Poor |
| Grand Blvd S over Is 44 Is 44 | 2016 | 20,984 | Good |
| Union Ave over Trra RR | 1988 | 20,200 | Good |
| Tower Gr-vandevent over UP RR | 1984 | 19,900 | Fair |
| Market St over Pedestrian Tunnel | 2021 | 19,390 | Good |
| Goodfellow Blvd S over Is 70 | 2001 | 18,971 | Fair |
| Arsenal over Rvr Des Peres BNSF RR | 1995 | 18,950 | Fair |
| West Florissant Av over Trra RR | 1959 | 17,689 | Poor |
| Rp IS55N to IS44W over Is 55 | 1965 | 17,530 | Fair |
| Grand Blvd S over Is 64 | 1954 | 17,514 | Fair |
| Union Blvd S over Is 70 Rv 70 | 1999 | 17,397 | Fair |
| Delmar Blvd over Metrolink | 2008 | 17,300 | Fair |
| Lansdowne Ave over Rvr Des Peres | 2003 | 17,000 | Fair |
| Rvr Des Peres Blvd over Mackenzie CR | 2006 | 16,500 | Good |
| Mo 30 E over River Des Peres | 1980 | 16,472 | Fair |
| Broadway over Beer Bottling Plan | 1917 | 16,300 | Good |
| Mo 30 E over Is 55 Is 55 | 1965 | 15,557 | Fair |
| Wellington Ave over Rvr Des Peres | 2013 | 15,500 | Fair |
| Ticketing Dr over Baggage Claim Dr | 1970 | 15,000 | Poor |
| 16TH St over Metrolink | 1991 | 14,500 | Fair |
| 18TH St over Metrolink | 1991 | 14,500 | Fair |
| 18TH St over UP & Trra RR | 1986 | 14,500 | Fair |
| R. Des Peres Dr over Chippewa | 1983 | 14,500 | Fair |
| Compton Ave over Mo Pac Bn N&W RR | 1965 | 14,270 | Poor |
| Tucker Blvd N over Is 55 Is 44 | 1965 | 13,991 | Poor |
| Mo 115 S over Trra RR | 1998 | 13,739 | Fair |
| West Florissant Av over Is 70 Rv 70 | 2000 | 13,576 | Fair |
| Vandeventer Ave over BNSF RR | 1984 | 13,530 | Fair |
| Rp IS55S to IS44E over Rp IS44E to Memorial Dr | 2015 | 13,491 | Good |
| Germania Rd over Rock CR | 1956 | 13,430 | Fair |
| Rt H N over Is 70 Rv 70 | 2000 | 12,614 | Fair |
| Clayton Ave E over Is 64 Rp US40W to Mccau | 2008 | 12,212 | Good |
| Compton Ave S over Is 64 Rp Forest Park | 2005 | 12,095 | Fair |
| Ramp A over No Feature | 1988 | 12,000 | Fair |
| Southwest Ave over Rvr Des Peres | 2003 | 12,000 | Good |
| Taylor Ave E over Is 70 Rv 70 | 2000 | 11,840 | Fair |
| Rt H S over Maline CR | 2007 | 11,608 | Good |
| Rt H N over Rt H Cst Broadway Cst | 1975 | 11,452 | Good |
| 14TH St over UP & Trra RR | 1981 | 11,400 | Fair |
| Boyle Ave S over Is 64 Rp IS64E to Van | 2014 | 11,031 | Good |
| Jamieson Ave S over Is 44 | 1971 | 11,019 | Fair |
| Morganford Rd over UP RR | 1997 | 10,900 | Good |
| Alabama Ave over Rvr Des Peres | 1994 | 10,800 | Good |
| Broadway Ave over Rvr Des Peres | 2004 | 10,679 | Good |
| Kingshighway Blvd over Is 70 Rv 70 | 2001 | 10,536 | Fair |
| Southwest Ave over UP RR | 1961 | 10,460 | Poor |
| Grand Ave over UP RR | 1913 | 10,200 | Poor |
| Arsenal St over UP RR | 2003 | 10,090 | Fair |
| Collector Dr over Airflight Dr | 1969 | 10,000 | Fair |
| Rp 22ND St to IS64 over Trra RR | 2020 | 10,000 | Good |
| Salisbury St over Mississippi Rvr | 1910 | 10,000 | Fair |
| Rp 14TH St to IS64 over Cst 14TH St | 1967 | 9,927 | Fair |
| Arsenal St E over Is 44 | 1971 | 9,501 | Fair |
| Lambert Intl Blvd over Cold Water CR | 1992 | 9,300 | Fair |
| Jamieson Ave N over Is 44 | 1971 | 9,268 | Fair |
| Tower Grove Ave over BNSF RR | 1984 | 9,235 | Fair |
| Tower Grove Ave S over Is 64 Rp Boyle Ave to I | 2014 | 9,215 | Good |
| De Baliviere Blvd over Metrolink | 1937 | 9,050 | Good |
| Pagoda Circle Dr over Rvr Des Peres Lago | 2000 | 9,000 | Good |
| W Pagoda Cir Dr over Rvr Des Peres Lago | 2000 | 9,000 | Good |
| Broadway S over Is 44 | 2023 | 8,704 | Good |
| Broadway S over Is 44 Rv 70 | 2021 | 8,704 | Good |
| Walnut St E over Is 44 | 2014 | 8,322 | Fair |
| Rp Grand Blvd to I over over Fill | 1981 | 8,276 | Fair |
| Rp S 7TH Blvd to I over Fill | 1978 | 8,094 | Fair |
| Pestalozzi St E over Is 55 | 1964 | 7,972 | Fair |
| Rp Skinker Blvd to over Is 64 | 2008 | 7,958 | Good |
| Rp IS44W to S 7TH over Cst 4TH St Cst Brdway | 1977 | 7,482 | Good |
| N Sarah St S over Rp Vandeventer Ave to Is | 2003 | 7,360 | Good |
| Dr Martin Luther K over Cst S Lenore K Sulliva | 1951 | 6,991 | Fair |
| Lafayette Ave E over Is 44 | 1978 | 6,942 | Fair |
| Mo 115 S over Is 70 Rv 70 | 2001 | 6,723 | Fair |
| Mo 100 E over BNSF RR | 2004 | 6,661 | Fair |
| Mo 100 E over BNSF RR | 2004 | 6,661 | Fair |
| Arsenal St E over Is 55 | 1964 | 6,498 | Fair |
| Arsenal St W over Is 55 Is 55 | 1964 | 6,498 | Fair |
| Weber Rd E over Is 55 Is 55 | 1962 | 6,388 | Fair |
| Taylor Ave S over Is 64 | 2015 | 6,284 | Good |
| Rp IS55N to Truman over Is 44 | 1970 | 6,207 | Fair |
| Rp IS64E to Grand over Fdrl Sign Co Entr | 1960 | 6,137 | Poor |
| Rp 6TH St to IS64E over Cst Brdway | 2006 | 5,931 | Good |
| Sublette Ave over Rvr Des Peres | 1987 | 5,700 | Fair |
| Rp IS44E to Lafaye over Is 44 Is 44 | 1965 | 5,692 | Fair |
| Mississippi Ave S over Is 44 Is 44 | 1970 | 5,652 | Fair |
| Mackland Ave over Rvr Des Peres | 1926 | 5,587 | Good |
| Rp IS64E to 14TH S over Metrolink | 1967 | 5,363 | Fair |
| Rp IS64E to 6TH St over 8TH Street | 1967 | 5,243 | Fair |
| St Louis Ave E over Is 70 Rv 70 | 1958 | 5,206 | Fair |
| Rp 8TH St to IS44E over Cst Park Ave Rp IS44E | 1978 | 5,183 | Fair |
| Compton Ave S over Is 44 Is 44 | 1970 | 5,157 | Fair |
| 18TH St S over No Feature | 2006 | 5,043 | Good |
| Government Dr over Rvr Des Peres Lago | 2017 | 5,000 | Good |
| Grand Dr over Metrolink | 1936 | 5,000 | Poor |
| Grand Dr over Rvr Des Peres Lago | 1935 | 5,000 | Good |
| Holly Hills Dr over UP RR | 1973 | 5,000 | Fair |
| Rp Market St to Is over Cst Forest Park Ave | 1981 | 4,705 | Fair |
| Rp Market St to Is over over Fill | 1981 | 4,705 | Fair |
| Rp IS44E to Vandev over Union Pacific RR | 1997 | 4,683 | Good |
| Shreve Ave S over Is 70 Rv 70 | 2001 | 4,391 | Fair |
| Utah St E over Is 55 | 1964 | 4,382 | Fair |
| Newstead Ave S over Is 64 Rp IS64E to Tow | 2013 | 4,314 | Good |
| Rp Vandeventer Ave over Union Pacific RR | 1997 | 4,245 | Good |
| Cass Ave E over Rp IS44W to Broadway Is | 2011 | 4,158 | Fair |
| Compton Ave S over Rp IS64W to Forest Park | 2005 | 4,129 | Fair |
| Macklind Ave S over Is 44 Is 44 | 1969 | 4,122 | Fair |
| Rp Tucker Blvd to over Is 44 Rp IS44E to 10T | 2012 | 4,079 | Good |
| Columbia Ave over UP RR | 1913 | 4,060 | Poor |
| Loughborough Ave E over Is 55 | 1963 | 4,029 | Fair |
| Mckinley Dr over Rvr Des Peres Lago | 1997 | 4,000 | Good |
| Rp Broadway to IS6 over Rp IS64E to 6TH St | 1967 | 3,913 | Fair |
| Holly Hills Ave E over Is 55 | 2011 | 3,888 | Good |
| Laural & Waterman over Metrolink | 1936 | 3,800 | Poor |
| Rp IS64E to 11TH S over RR Private Entranc | 1967 | 3,782 | Fair |
| Grand Dr over Forest Park Pkwy | 1961 | 3,500 | Poor |
| Mc Kinley Brg W over Is 70 Rv 70 | 2001 | 3,323 | Good |
| Rp IS70W to Tucker over Is 44 | 2013 | 3,273 | Good |
| Market St E over Cst Forest Park Ave | 1963 | 3,239 | Fair |
| Oakland Ave E over Is 64 | 2008 | 3,187 | Good |
| Ewing Ave S over Is 64 | 2020 | 3,152 | Good |
| Ramp D over Lambert Intl Dr | 1988 | 3,000 | Fair |
| Rp Papin St E to I over Rp IS64E to Vandeventer | 1977 | 2,838 | Fair |
| Loughborough Ave W over Is 55 Is 55 | 1963 | 2,689 | Fair |
| Rp 10TH St to IS64 over Cst Spruce St | 1967 | 2,657 | Fair |
| E Terminal Dr over Parking Lot Access | 1998 | 2,500 | Good |
| Edwards St S over Is 44 Is 44 | 1972 | 2,302 | Fair |
| Nebraska Ave S over Is 44 Is 44 | 1970 | 2,131 | Fair |
| Spruce St over Metrolink | 2016 | 2,081 | Good |
| Sidney St E over Is 55 | 1964 | 2,072 | Fair |
| 22ND St S over Is 64 | 2020 | 2,000 | Good |
| Eads Bridge over 1ST St Underpass Metr | 1874 | 2,000 | Fair |
| Rp IS64W to Clark over Cst Spruce St Metrolink | 1966 | 1,711 | Fair |
| Lagoon Dr over Rvr Des Peres Lago | 1989 | 1,600 | Good |
| Knox Ave over Rvr Des Peres | 1991 | 1,580 | Good |
| Bingham over Gravois Ave | 1939 | 1,500 | Fair |
| Carrie Ave E over Is 70 Rv 70 | 2001 | 1,372 | Fair |
| Delor St E over Is 55 Is 55 | 2011 | 1,341 | Fair |
| Hamilton Blvd over Alley Metrolink | 2024 | 1,300 | Good |
| Hamilton over Metrolink | 1936 | 1,300 | Poor |
| Madison St W over Is 70 Rv 70 | 1958 | 1,240 | Fair |
| City Street (ramp) over Chippewa | 1936 | 1,000 | Fair |
| Theater Dr over Rvr Des Peres Lago | 1922 | 1,000 | Poor |
| Tamm Ave S over Is 64 | 2007 | 670 | Fair |
| Bellerive over Cst Broadway St | 1918 | 250 | Fair |
| Sulphur Ave over Rvr Des Peres | 1970 | 200 | Poor |
| E Grand Dr over Rvr Des Peres Lago | 2002 | 10 | Fair |