| I-80 over Mississippi River & RR | 1967 | 38,100 | Fair |
| I 74 WB over Mississippi River | 2020 | 37,650 | Good |
| WB US 6 over Goose Creek | 2011 | 35,400 | Good |
| I-80 over Drainage Ditch | 1963 | 34,600 | Fair |
| I-80 over Stream | 1963 | 34,600 | Fair |
| I-80 over Drainage Ditch | 1963 | 31,600 | Fair |
| I-80 over Crow Creek | 1963 | 31,400 | Fair |
| US 61 over Crow Creek | 1981 | 29,300 | Good |
| I-74 (EB) over Duck Creek and Bike Path | 1971 | 28,450 | Fair |
| I-74 (WB) over Duck Creek and Bike Path | 1971 | 28,450 | Fair |
| I 74 & US 6 WB over US 67 Dme RR City Sts | 2019 | 28,250 | Good |
| I 74 EB US 6 EB over US 67 RR City Streets | 2021 | 28,250 | Good |
| I 74 EB over Mississippi River | 2021 | 28,250 | Good |
| US 6 over Cow Creek | 1936 | 28,000 | Fair |
| US 67 over Miss Rvr RR & Ia 461 | 1940 | 26,500 | Poor |
| I-80 WB over Imrl RR | 1963 | 26,250 | Fair |
| I-74 EB over Middle Rd | 1971 | 25,050 | Fair |
| I-74 WB over Middle Rd | 1971 | 25,050 | Fair |
| I-280 over Dme RR | 1971 | 24,200 | Good |
| I-280 over Lake Overflow | 1972 | 24,200 | Fair |
| I-280 over Mississippi River & Road | 1970 | 24,200 | Fair |
| US 6 over Silver Creek | 1983 | 22,700 | Fair |
| EB I-80 over Imrl RR | 1963 | 21,600 | Fair |
| E 53RD St over Goose Creek | 1978 | 21,325 | Fair |
| Middle Rd over Duck Creek | 1961 | 19,700 | Fair |
| I 74 WB over US 6 (spruce Hills) | 1971 | 19,450 | Fair |
| NB US 61 over Dme RR | 1981 | 18,650 | Fair |
| EB US 6 over Goose Creek | 2003 | 18,050 | Good |
| Locust St over Jersey Rd | 1968 | 17,800 | Fair |
| Locust St over over I.c.e. RR | 1970 | 17,800 | Fair |
| NB US 61 over Crow Creek | 1981 | 17,750 | Fair |
| SB US 61 over Crow Creek | 1981 | 17,750 | Good |
| I 74 EB over US 6 (spruce Hills) | 1971 | 17,500 | Fair |
| EB I-80 over Co Rd (z-30) | 1963 | 17,300 | Fair |
| Ia 461 over Goose Creek | 1951 | 17,300 | Fair |
| Elmore Ave over Pheasant Creek | 1994 | 16,900 | Good |
| WB I-80 over Co Rd (z-30) | 1963 | 16,850 | Fair |
| NB US 61 over 210TH St | 1981 | 16,000 | Fair |
| SB US 61 over Dme RR | 1981 | 16,000 | Fair |
| I 80 EB over Middle Rd | 1963 | 15,800 | Fair |
| US 67 over Duck Creek | 1996 | 15,500 | Good |
| E.53RD St. over Pheasant Creek | 1990 | 15,462 | Good |
| I 80 WB over Middle Rd | 1963 | 15,400 | Fair |
| Eastern Ave over Duck Creek | 1900 | 15,300 | Poor |
| SB US 61 over 210TH St | 1981 | 15,250 | Fair |
| Locust St over over Iais RR | 1968 | 14,859 | Fair |
| E 53RD St over Deere Creek | 1977 | 14,156 | Fair |
| E 53RD St over I-74 | 1990 | 13,253 | Good |
| SB US 61 over I-80 | 1963 | 13,200 | Fair |
| Marquette St over Duck Creek | 1965 | 12,300 | Fair |
| N Division St over Duck Creek | 1963 | 12,300 | Good |
| I 280 WB US 61 NB over Duck Creek | 2015 | 11,750 | Good |
| I-280 (EB) over Duck Creek | 1972 | 11,750 | Fair |
| Ia 461 & Bikepath over Drainage Ditch | 1957 | 11,500 | Fair |
| Fairmount St. over Duck Creek | 1983 | 10,500 | Fair |
| Kimberly Rd over Duck Creek | 1963 | 10,500 | Good |
| Eastern Ave over Goose Creek | 1978 | 10,200 | Poor |
| I 74 WB Ramp over Dme RR & Bike Trail | 2020 | 9,800 | Good |
| Ia 461 over Black Hawk Creek | 1957 | 9,800 | Fair |
| Ia 461 over Dme RR | 1958 | 9,800 | Fair |
| US 67 over Crow Creek | 1996 | 9,800 | Fair |
| US 67 over E. Pigeon Creek | 1995 | 9,800 | Good |
| US 67 over Pigeon Creek | 1995 | 9,800 | Fair |
| US 61 NB over Leclaire Rd | 1981 | 9,750 | Fair |
| US 61 SB over Leclaire Rd&bikepath | 1981 | 9,750 | Fair |
| Eastern Ave over over I.c.e. RR | 1981 | 9,600 | Fair |
| I 280 EB over Ia 22 | 1970 | 9,600 | Fair |
| I 280 WB over Ia 22 | 1970 | 9,600 | Fair |
| Rockinham Rd over Blackhawk Creek | 1999 | 9,480 | Fair |
| Ia 461 NB over Duck Creek | 2023 | 9,450 | Good |
| Middle Rd over Crow Creek | 2008 | 9,372 | Good |
| Ia 461 SB over Duck Creek-bike Path | 1970 | 8,950 | Fair |
| I 74 EB on Ramp over Bike Trail | 2021 | 8,900 | Good |
| Devils Glen Rd over Duck Creek | 1981 | 8,800 | Fair |
| NB US 61 over Wapsipinicon Bayou | 1981 | 8,800 | Fair |
| NB US 61 over Wapsipinicon River | 1981 | 8,800 | Fair |
| SB US 61 over Wapsipinicon Bayou | 1981 | 8,800 | Fair |
| SB US 61 over Wapsipinicon River | 1981 | 8,800 | Fair |
| Jersey Ridge Rd over Duck Creek | 1970 | 8,600 | Fair |
| US 61 NB over 267TH St | 1981 | 8,450 | Fair |
| US 61 SB over 267TH St | 1981 | 8,450 | Fair |
| US 67 over Spencer Creek | 1996 | 8,400 | Good |
| Hickory Grve Rd over Duck Creek | 1980 | 8,200 | Fair |
| EB Ia 130 over I-80 | 1959 | 7,900 | Fair |
| I-280 (nb-wb) over US 61 | 1970 | 7,900 | Fair |
| I-280 (sb-eb) over US 61 | 1970 | 7,900 | Fair |
| Arsenal Isl Rd over US 67 Mississippi River | 1942 | 7,600 | Fair |
| Ia 461 over Ia 22 | 2020 | 7,600 | Good |
| I-74 EB over I 80 | 1967 | 7,350 | Fair |
| I-74 WB over I 80 | 1967 | 7,350 | Fair |
| W Locust St over I-280 | 1971 | 7,000 | Fair |
| Plainview Rd over I-80(WALCOTT) | 1992 | 6,900 | Fair |
| Utica Ridge Rd over Crow Creek | 1993 | 6,382 | Good |
| Eastern Ave over Goose Creek | 1978 | 6,376 | Poor |
| E.46TH St over Goose Creek | 1997 | 6,288 | Good |
| Elmore Ave over Pheasant Creek | 2002 | 6,100 | Fair |
| US 6 over I-280 & US 61 | 1971 | 6,100 | Fair |
| 53RD Ave over Crow Creek | 2003 | 6,000 | Fair |
| I 280 EB over EB I-80 | 1960 | 6,000 | Fair |
| I 280 EB over I 280 WB | 1960 | 6,000 | Fair |
| Veterans Mempky over Ic&e RR | 2009 | 5,619 | Good |
| 23RD St over Duck Creek | 1969 | 5,500 | Fair |
| Ia 130 WB over I-80 | 1959 | 5,200 | Fair |
| US 67 over Wapsipinicon River | 1982 | 5,100 | Fair |
| US67 to I74 Ramp over Mississippi Blvd | 2019 | 5,100 | Good |
| I-280 WB over EB I-80 | 1960 | 4,990 | Fair |
| FM over Creek | 1956 | 4,750 | Fair |
| Devils Glen Rd over Crow Creek | 1999 | 4,610 | Good |
| I 74 EB Off Ramp over Mississippi Blvd | 2019 | 4,610 | Good |
| Utica Ridge Rd over I-80 | 1963 | 4,576 | Good |
| Lincoln Rd over I-74 | 2010 | 4,523 | Fair |
| Jersey Ridge Rd over I-80 | 1963 | 4,390 | Fair |
| 18TH St over Duck Creek | 1962 | 4,210 | Poor |
| N Division St over I-80 | 1959 | 4,023 | Fair |
| S Clark St over Blackhawk Creek | 1950 | 4,004 | Poor |
| Ia 22 over Dodge Creek | 1974 | 3,990 | Fair |
| F58 200TH St over Small Natural Stream | 2021 | 3,970 | Good |
| Ia 22 over Moore Creek | 1972 | 3,830 | Fair |
| W 49TH St over Silver Creek | 1971 | 3,680 | Fair |
| US 67 over Budd Creek | 1974 | 3,400 | Good |
| Ia 22 over Donaldson Creek | 2014 | 3,350 | Good |
| US 67 over Mc Carty Creek | 1974 | 3,330 | Good |
| Valley Dr over Crow Creek | 1985 | 3,267 | Good |
| Crow Creek Rd over Ginger Creek | 1996 | 3,221 | Fair |
| Crow Creek Rd over West Pigeon Creek | 1996 | 3,221 | Good |
| 195TH St over Spencer Creek | 2010 | 3,090 | Good |
| Elm St over Canadian Pacific RR | 2021 | 3,057 | Good |
| Crow Creek Rd over East Pigeon Creek | 1982 | 3,030 | Fair |
| Blackhawk Trail over US 61 | 1981 | 2,963 | Fair |
| Valley Dr over Spencer Creek | 2012 | 2,910 | Good |
| Veterans Mem Pkwy over Crow Creek | 2017 | 2,905 | Good |
| Main St over Mud Creek | 1984 | 2,896 | Fair |
| 210TH St over Creek | 2004 | 2,740 | Good |
| FM over Spencer Creek | 1975 | 2,740 | Fair |
| Y 68 over Mcdonalds Creek | 2012 | 2,470 | Good |
| Vets Memorial Pkwy over I 74 | 2015 | 2,383 | Good |
| Middle Rd over Spencer Creek | 1964 | 2,369 | Fair |
| S Clark St over Blackhawk Creek | 1950 | 2,351 | Fair |
| Co Rd Y-68 over Wapsi River Overflow | 1922 | 2,310 | Poor |
| Co Rd Y-68 over Wapsipinicon River | 1965 | 2,310 | Fair |
| Z30 240TH Ave over South Fork Lost Creek | 2024 | 2,221 | Good |
| S Concord St over Blackhawk Creek | 1990 | 2,197 | Fair |
| Local Muni Rd over Small Natural Stream | 1954 | 2,085 | Fair |
| NB US 61 over I 80 | 1963 | 1,990 | Fair |
| County Y52 over Branch Mud Creek | 1991 | 1,934 | Good |
| S Concord St over Blackhawk Creek | 1985 | 1,925 | Fair |
| Mayne St over U.S. 61 | 2000 | 1,920 | Good |
| Ramp US 61 over 210TH St | 1981 | 1,900 | Fair |
| E. 32ND St over Pheasant Creek | 1987 | 1,802 | Fair |
| Wells Ferry Rd over Spencer Creek | 1972 | 1,700 | Poor |
| Co Rd Y-68 over Crow Creek | 1954 | 1,680 | Fair |
| E 33RD St over Goose Creek | 1900 | 1,680 | Fair |
| Indiana Ave over Spencer Creek Trib | 2021 | 1,676 | Good |
| Y40 over US 61 | 2000 | 1,666 | Good |
| Ia 22 over Stream | 2015 | 1,560 | Good |
| 115TH Ave over Hickory Creek | 1993 | 1,540 | Good |
| Y40 (70TH Ave) over Creek | 2011 | 1,530 | Good |
| 300TH St over Creek | 1970 | 1,470 | Fair |
| Oak Lane over US 61 | 2000 | 1,410 | Good |
| Valley Dr over West Pigeon Creek | 1983 | 1,397 | Fair |
| 300TH St over Creek | 1970 | 1,390 | Fair |
| 300TH St over Creek | 1970 | 1,390 | Fair |
| Local Road over I-80 | 1963 | 1,354 | Fair |
| N Buffalo Ave over I-80 & US 6 | 1959 | 1,320 | Fair |
| Ia 130 over E Branch Mud Creek | 1977 | 1,300 | Fair |
| 60TH Ave over Creek | 1994 | 1,280 | Good |
| 60TH Ave over Creek | 1998 | 1,280 | Fair |
| 60TH Ave over Mud Creek | 1940 | 1,280 | Poor |
| FM over Creek | 1994 | 1,280 | Good |
| Territory Rd over Mccarty Creek | 2022 | 1,220 | Good |
| Territory Rd over Mccarty Creek | 2022 | 1,220 | Good |
| 240TH Ave over Wapsipinicon River | 1961 | 1,140 | Fair |
| 112TH St over Creek | 1964 | 1,070 | Fair |
| Big Rock Rd over Creek | 1923 | 1,060 | Poor |
| Bluff Rd over Lost Creek | 1985 | 1,060 | Good |
| FM over Walnut Creek | 1949 | 1,060 | Poor |
| Fairmount St over Blackhawk Creek | 1979 | 1,024 | Fair |
| Wells Ferry Rd over Creek | 1964 | 1,010 | Poor |
| 257TH St over Creek | 1956 | 940 | Fair |
| Wisconsin Ave over Cardinal Creek | 1960 | 930 | Fair |
| Telegraph Rd over Blackhawk CR | 1900 | 899 | Fair |
| 240TH Ave over Creek | 1962 | 870 | Poor |
| Utah Ave over Blackhawk Creek | 1960 | 851 | Fair |
| FM Y-30 over I-80 & US 6 | 1958 | 820 | Fair |
| Lincoln Rd over US 61 | 1981 | 814 | Good |
| Fairmount St over Silver Creek | 2011 | 810 | Good |
| Ia 130 over Mud Creek | 1977 | 800 | Good |
| 115TH Ave over Wapsipinicon River | 1965 | 750 | Poor |
| F-33 over US 61 | 1981 | 680 | Good |
| St Annes Rd over Mcdonalds Creek | 1988 | 680 | Good |
| 277TH Ave over Mccarty Creek | 2020 | 660 | Good |
| St Annes Rd over Creek | 2003 | 660 | Good |
| St Annes Rd over Glynns Creek | 1992 | 660 | Good |
| FM over Hicory Creek | 2010 | 640 | Good |
| Y30 20TH Ave over Mud Creek | 2021 | 610 | Good |
| 110TH Ave over Duck Creek | 2002 | 570 | Good |
| Allens Grove Rd over Mud Creek | 1987 | 550 | Fair |
| 290TH St over Mason Creek | 2009 | 510 | Good |
| St Annes Rd over Creek | 1989 | 510 | Fair |
| 130TH Ave over Creek | 2020 | 500 | Good |
| 180TH Ave over Crow Creek | 1992 | 490 | Good |
| Redwood Ave over Blackhawk Creek | 1984 | 472 | Good |
| Y30 20TH Ave over Trib to Mud Creek | 2021 | 460 | Good |
| Homestead Ave over Blackhawk Creek | 1985 | 377 | Fair |
| Wisconsin Ave over I-80 | 1959 | 374 | Fair |
| 230TH Ave over Br Lost Creek | 1992 | 370 | Fair |
| E 13TH St over over I.c.e. RR | 1900 | 358 | Poor |
| Canal Shore Dr over Stream | 1963 | 336 | Fair |
| Field Sike Dr over Crow Creek | 1992 | 295 | Good |
| River Camp Rd over Mud Creek | 1998 | 290 | Good |
| River Camp Rd over Mud Creek Overflow | 1991 | 290 | Fair |
| River Camp Rd over Mud Creek Overflow | 1991 | 290 | Fair |
| 220TH Ave over Jones Creek | 1986 | 210 | Fair |
| 296TH St over Creek | 1974 | 200 | Poor |
| 145TH Ave over Creek | 2000 | 150 | Good |
| 220TH Ave over Creek | 1921 | 150 | Fair |
| 80TH Ave over I-80 | 1958 | 150 | Good |
| Local over Creek | 1965 | 150 | Fair |
| 305TH St over Stream | 1976 | 143 | Poor |
| 241ST St over Hickory Creek | 1993 | 140 | Good |
| Allens Grove Rd over Br Mud Creek | 1993 | 130 | Fair |
| 130TH Ave over Creek | 1972 | 122 | Poor |
| 1ST Ave over Creek | 2015 | 120 | Good |
| Allers Grove Rd over Creek | 1938 | 120 | Fair |
| Utah Ave over Duck Creek | 1900 | 120 | Poor |
| W 46TH St over Cardinal Creek | 1900 | 120 | Poor |
| Wisconsin Ave over Duck Creek | 1960 | 120 | Poor |
| Gambril Rd over US 61 | 1981 | 110 | Good |
| 56TH St over Spencer Creek Trib | 1926 | 105 | Fair |
| 85TH Ave over Creek | 1974 | 102 | Poor |
| 260TH Ave over Creek | 2015 | 100 | Good |
| 60TH Ave over Creek | 2022 | 100 | Good |
| FM over Mc Carty Creek | 1992 | 100 | Fair |
| FM over Small Stream | 1987 | 100 | Good |
| Geo. Thuenen Dr over Imrl Link | 1998 | 95 | Fair |
| 10TH Ave over Creek | 1951 | 90 | Poor |
| 264TH St. over Creek | 1962 | 90 | Fair |
| 305TH St over Creek | 1971 | 90 | Fair |
| 305TH St over Stream | 1976 | 90 | Fair |
| 90TH Ave over Creek | 2002 | 90 | Good |
| W Garfield St over Crystal Creek | 2000 | 81 | Good |
| 1ST Ave over I-80 | 1959 | 80 | Fair |
| 210TH Ave over Small Stream | 2002 | 80 | Good |
| 250TH St over Lost Creek | 1985 | 80 | Fair |
| 1ST Ave over Br Mud Creek | 1988 | 71 | Fair |
| 305TH St over Creek | 2020 | 71 | Good |
| Local over Small Stream | 1993 | 71 | Fair |
| 57TH Ave over Wapsipinicon River | 1982 | 70 | Fair |
| Local over Creek | 1952 | 70 | Fair |
| 145TH Ave over Wapsipinicon River | 2003 | 60 | Good |
| 22OTH St over I-80 & US 6 | 1958 | 60 | Fair |
| 35TH Ave over Creek | 1965 | 51 | Poor |
| 140TH Ave over Creek | 2019 | 50 | Good |
| 230TH St over Creek | 2016 | 50 | Good |
| 247TH Ave over Creek | 2019 | 50 | Good |
| 285TH St over Creek | 1997 | 50 | Good |
| 40TH Ave over Creek | 1972 | 50 | Poor |
| 130TH Ave over Creek | 1929 | 45 | Fair |
| 130TH St over Creek | 2000 | 45 | Good |
| 288TH St over Creek | 1966 | 45 | Fair |
| 288TH St over Mud Creek Overflow | 1991 | 45 | Fair |
| 320TH St over Creek | 2013 | 45 | Good |
| 85TH Ave over Creek | 2017 | 45 | Good |
| Devils Glen Rd over Spencer Creek | 2016 | 42 | Good |
| 10TH Ave over Creek | 1960 | 40 | Fair |
| 250TH St over Creek | 2013 | 40 | Good |
| Tanglewood Rd over Crow Creek | 2010 | 40 | Good |
| 265TH St over Creek | 1996 | 35 | Poor |
| 90TH St over Creek | 1997 | 35 | Fair |
| 172ND Ave over Creek | 1958 | 34 | Fair |
| Local over Creek | 1999 | 34 | Good |
| 240TH St over Creek | 1965 | 31 | Poor |
| 47TH Ave over Mud Creek | 1965 | 30 | Fair |
| 140TH Ave over Creek | 1967 | 26 | Poor |
| 255TH St over Creek | 1965 | 26 | Fair |
| 35TH Ave over Mud Creek | 1965 | 26 | Fair |
| 70TH Ave over Creek | 1968 | 26 | Fair |
| 97TH Ave over Creek | 2016 | 26 | Good |
| 100TH Ave over Duck Creek | 1988 | 25 | Good |
| 170TH St over Creek | 1993 | 25 | Fair |
| 35TH Ave over Creek | 1965 | 25 | Poor |
| Local over Creek | 1988 | 25 | Good |
| 265TH Ave over Creek | 1965 | 20 | Fair |
| 300TH St over Contention Creek | 2004 | 20 | Fair |
| 50TH Ave over Creek | 1974 | 20 | Fair |
| 255TH Ave over Creek | 1999 | 15 | Good |
| 275TH St over Stream | 1976 | 15 | Good |
| 30TH Ave over Creek | 1993 | 15 | Fair |
| 75TH Ave over Creek | 1972 | 15 | Fair |
| Local over Creek | 1998 | 11 | Fair |
| Local over Drainage | 1996 | 11 | Fair |