Slab bridges in Iowa
A solid, flat concrete slab that acts as both the supporting structure and the roadway surface. Common for short crossings. Iowa has 5,679 of them, 23.9% of its bridges. Nationally this type accounts for 13.2% of all bridges.Compare states for this type.
- Slab bridges
- 5,679
- Poor condition
- 11%
- 627 bridges
- Average age
- 37.6 yrs
- Combined length
- 104 mi
Busiest slab bridges in Iowa
Top 200 by daily traffic| Bridge | County | Location | Built | Type | Length | Daily traffic | Condition |
|---|---|---|---|---|---|---|---|
| EB I-235 over Cummins Parkway No. 000000000042300 | Polk County | 0.2 Mile E of JCT Ia 28 | 1967 | Slab | 231 ft | 51,400 | Fair |
| WB I-235 over Cummins Parkway No. 000000000042310 | Polk County | 0.2 Mile E of JCT Ia 28 | 1967 | Slab | 231 ft | 51,400 | Fair |
| WB US 6 over Goose Creek No. 000000000046831 | Scott County | 1.7 Mi. W of Jct. I-74 | 2011 | Slab | 115 ft | 35,400 | Good |
| US 6 over Clear Creek No. 000000000031531 | Johnson County | 0.3 Mi. W of Jct. 1st Ave | 1998 | Slab | 213 ft | 27,200 | Good |
| 1st Ave over Clear Creek No. 000000000002580 | Johnson County | 000000000 | 1969 | Slab | 150 ft | 23,500 | Good |
| C Ave NE over Dry Run Creek No. 000000000001541 | Linn County | C77521027 | 1975 | Slab | 174 ft | 23,000 | Fair |
| US 6 over Silver Creek No. 000000000046811 | Scott County | 2.2 Mi. W of Jct. US 61 | 1983 | Slab | 123 ft | 22,700 | Fair |
| US 6 over N Walnut Creek&bike Path No. 000000000040390 | Polk County | 1.1 MI W of W JCT Ia 28 | 1969 | Slab | 103 ft | 20,500 | Fair |
| Middle RD over Duck Creek No. 000000000000660 | Scott County | Bettendorf Ia | 1961 | Slab | 128 ft | 19,700 | Fair |
| Hamilton Blvd over Perry Creek No. 000000000503280 | Woodbury County | 000000000 | 1971 | Slab | 131 ft | 18,291 | Fair |
| EB I-80 over Sugar Creek No. 000000000030910 | Jasper County | 1.0 Miles W of JCT Ia 117 | 1960 | Slab | 101 ft | 18,050 | Fair |
| WB I-80 over Sugar Creek No. 000000000030920 | Jasper County | 1.0 Mi. W of JCT Ia 117 | 1960 | Slab | 101 ft | 18,050 | Poor |
| EB US 6 over Goose Creek No. 000000000046821 | Scott County | 1.7 Mi. W of Jct. I-74 | 2003 | Slab | 116 ft | 18,050 | Good |
| NB US 61 over Crow Creek No. 000000000604660 | Scott County | 1.6 Mi. N of Jct. I-80 | 1981 | Slab | 123 ft | 17,750 | Fair |
| SB US 61 over Crow Creek No. 000000000604665 | Scott County | 1.6 Mi. N of Jct. I-80 | 1981 | Slab | 123 ft | 17,750 | Good |
| 2nd Ave over Birdland DR No. 000000000501161 | Polk County | 079243502 | 2023 | Slab | 124 ft | 17,517 | Good |
| Council ST NE over Dry Creek No. 000000000001511 | Linn County | 000000000 | 2003 | Slab | 120 ft | 17,285 | Good |
| EB I-80 over Prairie Creek No. 000000000031010 | Jasper County | 4.3 Miles E of JCT Ia 117 | 1961 | Slab | 180 ft | 16,700 | Fair |
| WB I-80 over Prairie Creek No. 000000000031020 | Jasper County | 4.3 Mi. E of Jct. Ia 117 | 1961 | Slab | 180 ft | 16,700 | Fair |
| US 6 EB over Walnut Creek/Bike Path No. 000000000606670 | Polk County | 1.0 Mi. W of Jct. I-35/80 | 1998 | Slab | 178 ft | 15,650 | Good |
| US 6 WB over Walnut Creek/Bike Path No. 000000000606675 | Polk County | 1.0 MI W of JCT I-35/80 | 1998 | Slab | 178 ft | 15,650 | Good |
| US 67 over Duck Creek No. 000000000047051 | Scott County | 7.0 Mi. S of Jct. I-80 | 1996 | Slab | 133 ft | 15,500 | Good |
| Eastern Ave over Duck Creek No. 000000000003370 | Scott County | 000000000 | 1900 | Slab | 97 ft | 15,300 | Poor |
| SW 9th ST over Yeader Creek No. 000000000004081 | Polk County | 078242800 | 2004 | Slab | 90 ft | 15,163 | Good |
| Grand Ave over Walnut Creek No. 000000000003732 | Polk County | Grand Avenue | 2013 | Slab | 168 ft | 14,881 | Good |
| EB I-80 over 50th Street No. 000000000046100 | Poweshiek County | 2.1 Mi. E of Jct. Ia 146 | 1963 | Slab | 114 ft | 14,250 | Fair |
| Boyson RD over Dry Creek No. 000000000501130 | Linn County | 000000000 | 2000 | Slab | 112 ft | 14,100 | Fair |
| Gilbert ST over Ralston Creek No. 000000000006450 | Johnson County | 079061500 | 1972 | Slab | 83 ft | 14,025 | Poor |
| WB I-80 over 50th Street No. 000000000046110 | Poweshiek County | 2.1 Mi. E of JCT Ia 146 | 1963 | Slab | 114 ft | 14,000 | Fair |
| EB I-80 over Over Abandon RR No. 000000000045450 | Pottawattamie County | 3.0 Mi. E of Jct. I-680 | 1965 | Slab | 133 ft | 13,200 | Fair |
| WB I-80 over Over Abandon RR No. 000000000045460 | Pottawattamie County | 3.0 Mi. E of Jct. I-680 | 1965 | Slab | 133 ft | 13,200 | Fair |
| US 30 over Ditch #77 No. 000000000017090 | Carroll County | 1.1 Mi. E. of Jct. US 71 | 1919 | Slab | 25 ft | 13,000 | Fair |
| EB I-80 over 570th ST No. 000000000017980 | Cass County | 2.0 Mi. W of Jct. Ia 173 | 1966 | Slab | 115 ft | 11,750 | Fair |
| WB I-80 over 570th ST No. 000000000017990 | Cass County | 2.0 Mi. W of Jct. Ia 173 | 1966 | Slab | 115 ft | 11,750 | Fair |
| I 280 WB US 61 NB over Duck Creek No. 000000000600651 | Scott County | 2.5 Mi. S of US 6 | 2015 | Slab | 141 ft | 11,750 | Good |
| I-280 (eb) over Duck Creek No. 000000000600680 | Scott County | 3.4 Mi. S of Jct. I-80 | 1972 | Slab | 127 ft | 11,750 | Fair |
| Isett Ave over Geneva Creek No. 000000000008471 | Muscatine County | 000000000 | 1980 | Slab | 75 ft | 11,716 | Fair |
| University Ave over North Walnut Creek No. 000000000501231 | Polk County | 078250300 | 1983 | Slab | 86 ft | 11,490 | Good |
| Ave L over Dry Creek No. 000000000033150 | Lee County | 076040507 | 1915 | Slab | 70 ft | 10,953 | Poor |
| 8th Ave over Indian Creek No. 000000000007691 | Linn County | 083070100 | 1988 | Slab | 227 ft | 10,789 | Poor |
| Hamilton Blvd over Perry Creek No. 000000000503270 | Woodbury County | 000000000 | 1959 | Slab | 153 ft | 10,721 | Fair |
| Fairmount St. over Duck Creek No. 000000000503760 | Scott County | 000000000 | 1983 | Slab | 150 ft | 10,500 | Fair |
| SB US 218 over Old Man Creek Overflow No. 000000000604990 | Johnson County | 0.6 Mi. N of Jct. SR F62 | 1983 | Slab | 103 ft | 10,450 | Good |
| US 30 over Willow Creek No. 000000000027401 | Harrison County | 0.6 Mi. E of Jct. I-29 | 1972 | Slab | 133 ft | 10,300 | Fair |
| NB US 218 over Old Man Creek Overflow No. 000000000604985 | Johnson County | 0.6 Mi. N of Observ. Ave | 1983 | Slab | 103 ft | 10,250 | Fair |
| Eastern Ave over Goose Creek No. 000000000003380 | Scott County | 000000000 | 1978 | Slab | 81 ft | 10,200 | Poor |
| Bowling ST over Prairie Creek No. 000000000001480 | Linn County | 000000000 | 1979 | Slab | 193 ft | 10,184 | Fair |
| Bowling ST over Over UP RR No. 000000000001490 | Linn County | 000000000 | 1980 | Slab | 165 ft | 10,184 | Fair |
| SB 218 EB 57 over Cedar River Overflow No. 000000000014595 | Black Hawk County | 0.2 Mi. E of Jct. Ia 27 | 1974 | Slab | 533 ft | 10,000 | Fair |
| NB I-35 over Elk Creek No. 000000000600180 | Worth County | 7.3 Mi. N of Jct. Ia 9 | 1972 | Slab | 128 ft | 9,950 | Fair |
| NB I-29 over ST Marys Creek No. 000000000036371 | Mills County | 0.9 Mi. S of Jct. Ia 370 | 2009 | Slab | 123 ft | 9,850 | Good |
| SB I-29 over ST Marys Creek No. 000000000036381 | Mills County | 0.9 Mi. S of Jct. Ia 370 | 2009 | Slab | 123 ft | 9,850 | Good |
| NB 218 WB 57 over Cedar River Overflow No. 000000000014605 | Black Hawk County | 0.2 Mi. E of Ia. 27 | 1974 | Slab | 533 ft | 9,800 | Fair |
| Ia 1 over Rapid Creek No. 000000000031790 | Johnson County | 1.1 Mi. N of Jct. I-80 | 1967 | Slab | 128 ft | 9,800 | Fair |
| SB US 65 & 69 over Stream No. 000000000050940 | Warren County | 0.2 Mi. N of Jct. SR G24 | 1970 | Slab | 88 ft | 9,750 | Good |
| SB I-35 over Elk Creek No. 000000000600190 | Worth County | 7.3 Mi. N of Jct. Ia. 9 | 1972 | Slab | 128 ft | 9,750 | Fair |
| Center Point RD over Over Cc RR No. 000000000033810 | Linn County | 000000000 | 1968 | Slab | 213 ft | 9,703 | Poor |
| NB US 65 & 69 over Stream No. 000000000050930 | Warren County | 0.2 Mi. N of Jct. SR G-24 | 1922 | Slab | 89 ft | 9,550 | Fair |
| Rockinham RD over Blackhawk Creek No. 000000000002901 | Scott County | 000000000 | 1999 | Slab | 48 ft | 9,480 | Fair |
| Ia 461 NB over Duck Creek No. 000000000046941 | Scott County | 0.4 Mi. S. of US 6 | 2023 | Slab | 197 ft | 9,450 | Good |
| US 6 over Raccoon River Overflow No. 000000000021821 | Dallas County | 0.6 Mi. E of E JCT US 169 | 1977 | Slab | 138 ft | 9,400 | Fair |
| 13th ST NE over Winnebago River No. 000000000008040 | Cerro Gordo County | 000000000 | 1938 | Slab | 102 ft | 9,091 | Fair |
| Ia 330 SB over North Timber Creek No. 000000000035641 | Marshall County | 2.9 Miles S of JCT US 30 | 1979 | Slab | 134 ft | 9,000 | Good |
| Ia 461 SB over Duck Creek-Bike Path No. 000000000047210 | Scott County | 0.4 Mi. S of Jct.Us 6 | 1970 | Slab | 179 ft | 8,950 | Fair |
| 5th Ave over Drainage Ditch No. 000000000052120 | Webster County | 089282700 | 1955 | Slab | 73 ft | 8,894 | Poor |
| Mfr Drive over Mill Creek No. 000000000002101 | Clinton County | 081061507 | 1992 | Slab | 191 ft | 8,800 | Good |
| Mfr Drive over Harts Mill Creek No. 000000000002111 | Clinton County | 081061505 | 1993 | Slab | 118 ft | 8,800 | Good |
| NB US 61 over Wapsipinicon Overflow No. 000000000604490 | Clinton County | 2.8 Miles S of U.S. 30 | 1981 | Slab | 283 ft | 8,800 | Fair |
| SB US 61 over Wapsipinicon Overflow No. 000000000604500 | Clinton County | 2.8 Miles S of U.S.30 | 1981 | Slab | 283 ft | 8,800 | Fair |
| NB US 61 over Wapsipinicon Bayou No. 000000000604630 | Scott County | 1.8 Mi. N of SR F33. | 1981 | Slab | 283 ft | 8,800 | Fair |
| SB US 61 over Wapsipinicon Bayou No. 000000000604635 | Scott County | 1.8 Mi. N of SR F 33 | 1981 | Slab | 283 ft | 8,800 | Fair |
| W 19th ST over Perry Creek No. 000000000010581 | Woodbury County | M29821120 | 1994 | Slab | 181 ft | 8,606 | Good |
| 73rd ST over Walnut Creek No. 000000000012741 | Polk County | 078250300 | 1996 | Slab | 205 ft | 8,604 | Good |
| Jersey Ridge RD over Duck Creek No. 000000000003400 | Scott County | 000000000 | 1970 | Slab | 166 ft | 8,600 | Fair |
| 6th ST SW over Prairie Creek No. 000000000033441 | Linn County | 000000000 | 2010 | Slab | 195 ft | 8,588 | Good |
| WB US 30 over Grant Creek No. 000000000048785 | Story County | 2.8 Mi. E of Jct. I-35 | 1991 | Slab | 83 ft | 8,450 | Good |
| Hubbell Ave over Four Mile Creek No. 000000000003740 | Polk County | 079232901 | 2002 | Slab | 184 ft | 8,411 | Fair |
| Mill Cr. Expwy. over Harts Mill Creek No. 000000000504535 | Clinton County | 081061505 | 2000 | Slab | 153 ft | 8,400 | Fair |
| Ireland Avenue over Clear Creek No. 000000000205071 | Johnson County | 080073304 | 1973 | Slab | 128 ft | 8,339 | Good |
| I 35 NB over Stream No. 000000000602570 | Hamilton County | 1.8 Miles N of Sec RD D20 | 1972 | Slab | 93 ft | 8,300 | Fair |
| NB I-35 over CO RD D-25 No. 000000000602530 | Hamilton County | At Junction With SR D25 | 1974 | Slab | 143 ft | 8,250 | Fair |
| Ia 9 over Des Moines River No. 000000000024301 | Emmet County | 0.6 Mi. W of Jct. Ia 4 | 1975 | Slab | 286 ft | 8,200 | Fair |
| SB I-35 over Stream No. 000000000602580 | Hamilton County | 1.8 Miles N of Sec RD D20 | 1972 | Slab | 93 ft | 8,200 | Fair |
| Hickory Grve RD over Duck Creek No. 000000000003070 | Scott County | 000000000 | 1980 | Slab | 167 ft | 8,200 | Fair |
| EB US 30 over Grant Creek No. 000000000048780 | Story County | 2.8 Miles E of JCT I-35 | 1964 | Slab | 82 ft | 8,100 | Fair |
| 10th ST over Indian Creek No. 000000000007721 | Linn County | 084063100 | 1999 | Slab | 150 ft | 8,092 | Fair |
| I 35 SB over SR D25 No. 000000000602540 | Hamilton County | At Junction With SR D25 | 1974 | Slab | 143 ft | 7,950 | Fair |
| Washngton St. over Mad Creek No. 000000000008431 | Muscatine County | 000000000 | 1986 | Slab | 100 ft | 7,906 | Fair |
| 5th ST over Mad Creek No. 000000000008421 | Muscatine County | 000000000 | 2006 | Slab | 130 ft | 7,900 | Fair |
| Easton Blvd over Four Mile Creek No. 000000000003762 | Polk County | 0792332 | 2011 | Slab | 160 ft | 7,802 | Good |
| US 151 over Drainage Ditch No. 000000000033791 | Linn County | 2.5 Mi. S of Jct. U.S. 30 | 2020 | Slab | 141 ft | 7,800 | Good |
| NB I-29 over Robinson Ditch No. 000000000037351 | Monona County | 4.1 Mi. S of Jct. Ia 141 | 2011 | Slab | 103 ft | 7,800 | Good |
| SB I-29 over Robinson Ditch No. 000000000037361 | Monona County | 4.1 MI S of JCT Ia 141 | 2009 | Slab | 103 ft | 7,800 | Good |
| EB US 30 over Morgan Creek No. 000000000033411 | Linn County | 3.6 MI W of JCT US 151 | 1992 | Slab | 113 ft | 7,700 | Fair |
| WB US 30 over Morgan Creek No. 000000000606305 | Linn County | 3.6 MI W of JCT US 151 | 1992 | Slab | 113 ft | 7,700 | Good |
| NB I-29 over Old Soldier River Ditch No. 000000000028210 | Harrison County | 4.0 Mi. S of Ia 127 | 1967 | Slab | 102 ft | 7,600 | Fair |
| SB I-29 over Old Soldier River Ditch No. 000000000028220 | Harrison County | 4.0 Mi. S of Jct. Ia 127 | 1967 | Slab | 102 ft | 7,600 | Fair |
| NB I-29 over Burcham Creek No. 000000000028240 | Harrison County | 2.7 Mi. S of JCT 127 | 1967 | Slab | 117 ft | 7,600 | Fair |
| SB I-29 over Burcham Creek No. 000000000028250 | Harrison County | 2.8 Mi. S of Jct. 127 | 1967 | Slab | 117 ft | 7,600 | Fair |
| NB I-29 over Burcham Creek No. 000000000028260 | Harrison County | 1.2 Mi. S of Jct. Ia 127 | 1967 | Slab | 92 ft | 7,600 | Fair |
| SB I-29 over Burcham Creek No. 000000000028270 | Harrison County | 1.2 Mi. S of Jct. Ia 127 | 1967 | Slab | 92 ft | 7,600 | Fair |
| SB US 218 over Davis Creek No. 000000000605580 | Washington County | 4.1 Mi. S of Jct. Ia. 22 | 1984 | Slab | 133 ft | 7,600 | Fair |
| Quail Ave over Quarry Haul RD No. 000000000342536 | Webster County | 088280512 | 2010 | Slab | 123 ft | 7,579 | Good |
| SB US 75 over Stream No. 000000000039330 | Plymouth County | 1.3 Mi. N of SR C70 | 1948 | Slab | 28 ft | 7,500 | Fair |
| SB US 75 over Stream No. 000000000039351 | Plymouth County | 1.6 Mi. N of Jct. SR C70 | 2020 | Slab | 71 ft | 7,500 | Good |
| US 75 SB over Stream No. 000000000039381 | Plymouth County | 0.6 Mi. S of SR C60 | 2020 | Slab | 101 ft | 7,500 | Good |
| NB US 75 over Stream No. 000000000039321 | Plymouth County | 1.3 MI N of SR C70 | 1926 | Slab | 26 ft | 7,450 | Good |
| NB US 75 over Stream No. 000000000039342 | Plymouth County | 1.6 Mi. N of JCT SR C70 | 2019 | Slab | 71 ft | 7,450 | Good |
| NB US 75 over Stream No. 000000000039371 | Plymouth County | 0.6 Mi. S of SR C60 | 1926 | Slab | 26 ft | 7,450 | Fair |
| NB US 218 over Davis Creek No. 000000000601660 | Washington County | 4.0 Mi. S of Ia 22 | 1994 | Slab | 133 ft | 7,450 | Good |
| 23rd Ave over Indian Creek No. 000000000500871 | Pottawattamie County | 000000000 | 1980 | Slab | 176 ft | 7,347 | Fair |
| US 30 over Storm Creek No. 000000000017110 | Carroll County | 2.5 Mi. W. of Jct. SR N41 | 1955 | Slab | 122 ft | 7,300 | Fair |
| NB I-29 over Drainage Ditch No. 000000000028300 | Harrison County | 1.8 Mi. N of JCT.127 | 1967 | Slab | 92 ft | 7,300 | Fair |
| SB I-29 over Drainage Ditch No. 000000000028310 | Harrison County | 1.8 Mi. N of JCT.127 | 1967 | Slab | 92 ft | 7,300 | Fair |
| US 75 over Stream No. 000000000607555 | Sioux County | 1.3 MI N of JCT Ia 10 | 1998 | Slab | 128 ft | 7,300 | Good |
| NB I-29 over Cleghorn Creek No. 000000000037271 | Monona County | 4.5 Mi. S of Ia 175 | 2012 | Slab | 123 ft | 7,250 | Good |
| SB I-29 over Cleghorn Creek No. 000000000037281 | Monona County | 4.5 Mi. S of Ia 175 | 2011 | Slab | 123 ft | 7,250 | Good |
| Mt Vernon RD over Wanatee Creek No. 000000000220840 | Linn County | 083062909 | 1969 | Slab | 94 ft | 7,169 | Fair |
| S Monroe Ave over Willow Creek No. 000000000008100 | Cerro Gordo County | 000000000 | 1963 | Slab | 110 ft | 7,094 | Fair |
| 1st ST NW over Willow Creek No. 000000000008011 | Cerro Gordo County | 000000000 | 1978 | Slab | 128 ft | 7,043 | Fair |
| US 151 NB over Crab Apple Creek No. 000000000033541 | Linn County | 2.9 Mi. N of N Jct. Ia 13 | 2021 | Slab | 101 ft | 7,000 | Good |
| SB US 151 over Crab Apple Creek No. 000000000606295 | Linn County | 2.9 Mi. N of N Jct. Ia 13 | 1992 | Slab | 103 ft | 7,000 | Fair |
| SB US 75 over Stream No. 000000000039430 | Plymouth County | 1.3 Mi. N of S.R. C-60 | 1948 | Slab | 28 ft | 7,000 | Fair |
| SB US 75 over Dry Creek No. 000000000039450 | Plymouth County | 1.9 Mi. N of Jct. SR C60 | 1948 | Slab | 28 ft | 7,000 | Fair |
| SB US 75 over Dry Creek No. 000000000039470 | Plymouth County | 2.3 Mi. N of SR C60 | 1948 | Slab | 28 ft | 7,000 | Fair |
| SB US 75 over Dry Creek No. 000000000039570 | Plymouth County | 1.5 Mi. S of SR C44 | 1948 | Slab | 28 ft | 7,000 | Fair |
| SB US 75 over Flat Creek No. 000000000039590 | Plymouth County | 1.2 Mi. S of Jct. SR C44 | 1948 | Slab | 28 ft | 7,000 | Fair |
| University Ave over Small Stream No. 000000000015070 | Black Hawk County | 000000000 | 1969 | Slab | 105 ft | 6,993 | Good |
| Hudson RD over Dry Run Creek No. 000000000603870 | Black Hawk County | 000000000 | 1969 | Slab | 103 ft | 6,993 | Fair |
| E34(CO Home Rd) over Berrys Run No. 000000000221371 | Linn County | East of N Marion RD | 2013 | Slab | 73 ft | 6,874 | Good |
| Ia 122 EB over Willow Creek No. 000000000018780 | Cerro Gordo County | 4.4 Mi. E of Jct. I-35 | 1933 | Slab | 53 ft | 6,850 | Fair |
| Ia 122 WB over Willow Creek No. 000000000018785 | Cerro Gordo County | 4.4 Mi. E of Jct. I-35 | 1970 | Slab | 52 ft | 6,850 | Fair |
| NB I-29 over Drainage Ditch No. 000000000036181 | Mills County | 4.3 Mi. S of S Jct. US 34 | 2009 | Slab | 123 ft | 6,850 | Good |
| SB I-29 over Drainage Ditch No. 000000000036191 | Mills County | 4.3 Mi. S of S Jct. US 34 | 2009 | Slab | 123 ft | 6,850 | Good |
| NB I-29 over Haynie Slough No. 000000000036210 | Mills County | 2.4 Mi. S of S Jct. US 34 | 1971 | Slab | 83 ft | 6,850 | Fair |
| SB I-29 over Haynie Slough No. 000000000036220 | Mills County | 2.4 Mi. S of S Jct. US 34 | 1971 | Slab | 83 ft | 6,850 | Fair |
| US 30 over Hog Creek No. 000000000027421 | Harrison County | 2.5 Mi. W of Jct. 127 | 1983 | Slab | 113 ft | 6,800 | Fair |
| NB I-29 over Jesup Ave No. 000000000036311 | Mills County | 1.3 Mi. N of S Jct. US 34 | 2011 | Slab | 143 ft | 6,800 | Good |
| SB I-29 over Jesup Ave No. 000000000036321 | Mills County | 1.3 Mi. N of S Jct. US 34 | 2010 | Slab | 143 ft | 6,800 | Good |
| 1st Avenue over Muddy Creek No. 000000000359281 | Johnson County | 080063204 | 1988 | Slab | 128 ft | 6,625 | Good |
| US 63 over Little Muchakinock Creek No. 000000000035090 | Mahaska County | 0.2 Miles North of Ia 163 | 1963 | Slab | 127 ft | 6,600 | Fair |
| NB I-29 over Lambert Ave No. 000000000036251 | Mills County | S Jct. of U.S. 34 | 2011 | Slab | 153 ft | 6,600 | Good |
| SB I-29 over Lambert Ave No. 000000000036261 | Mills County | S Jct. of US 34 | 2011 | Slab | 153 ft | 6,600 | Good |
| US 18 over E Branch Iowa River No. 000000000026831 | Hancock County | 0.4 Mi. W of E Jct. US 69 | 2002 | Slab | 103 ft | 6,500 | Good |
| US 30 over Allen Creek No. 000000000027370 | Harrison County | 0.9 Mi. W of JCT.29 | 1929 | Slab | 73 ft | 6,500 | Fair |
| EB US 20 over Little Whiskey Creek No. 000000000052850 | Woodbury County | 3.4 Mi. W of SR K42 | 1959 | Slab | 122 ft | 6,500 | Fair |
| WB US 20 over Little Whiskey Creek No. 000000000052860 | Woodbury County | 3.4 Mi. W of SR K42 | 1953 | Slab | 122 ft | 6,500 | Fair |
| Eastern Ave over Goose Creek No. 000000000003390 | Scott County | 000000000 | 1978 | Slab | 81 ft | 6,376 | Poor |
| CO Home RD over Dry Creek No. 000000000221561 | Linn County | Cty Home RD over Dry CR | 2010 | Slab | 130 ft | 6,285 | Good |
| US 151 SB over Kitty Creek No. 000000000032250 | Jones County | 1.1 Mi. S of Jct. SR X-44 | 1960 | Slab | 72 ft | 6,250 | Fair |
| Lincoln HWY over W Br Indian Creek No. 000000000049411 | Story County | 000000000 | 2000 | Slab | 143 ft | 6,241 | Good |
| SB US 218 over Sink Creek No. 000000000605190 | Black Hawk County | 0.7 MI S of JCT US20/I380 | 1983 | Slab | 177 ft | 6,200 | Good |
| Ia 22 over Salvesen Creek No. 000000000051731 | Washington County | 0.2 Mi. E of Jct. Ia 1 | 2017 | Slab | 71 ft | 6,200 | Good |
| Stone Pk Blvd over Perry Creek No. 000000000501450 | Woodbury County | 000000000 | 1978 | Slab | 91 ft | 6,129 | Fair |
| South Main ST over Branch of Kitty Creek No. 000000000032261 | Jones County | 000000000 | 1972 | Slab | 27 ft | 6,117 | Fair |
| Ia 3 over Drainage Ditch No. 000000000015550 | Bremer County | 0.2 Mi. W of Jct. US 218 | 1967 | Slab | 103 ft | 6,100 | Fair |
| US 151 over Price Creek No. 000000000029581 | Iowa County | 0.3 Mi. N of Jct. Ia #220 | 2010 | Slab | 153 ft | 6,100 | Good |
| NB US 218 over Sink Creek No. 000000000605185 | Black Hawk County | .7 MI S of JCT US 20/I380 | 1983 | Slab | 177 ft | 6,050 | Good |
| NB I-29 over Horse Creek No. 000000000600110 | Fremont County | 1.8 Mi. N of Jct. Ia 2 | 1972 | Slab | 103 ft | 6,050 | Fair |
| SB I-29 over Horse Creek No. 000000000600120 | Fremont County | 1.8 Mi. N of Jct. Ia 2 | 1972 | Slab | 103 ft | 6,050 | Fair |
| US 218 over Stream No. 000000000014851 | Black Hawk County | 0.6 Mi. N of Jct. SR D38 | 2001 | Slab | 93 ft | 6,000 | Good |
| SB I-29 over 155th ST No. 000000000600147 | Fremont County | At Jct. SR J-24 | 2009 | Slab | 153 ft | 6,000 | Good |
| NB I-29 over 155th ST No. 000000000600149 | Fremont County | At Jct. SR J-24 | 2009 | Slab | 153 ft | 6,000 | Good |
| Ia 1 over Mill Creek No. 000000000031841 | Johnson County | 0.1 Mi. N of Solon | 1985 | Slab | 93 ft | 6,000 | Fair |
| US 30 WB over Iowa River East Overflow No. 000000000700950 | Tama County | 0.6 Mi. W. of Co. Rd. T47 | 2021 | Slab | 153 ft | 5,950 | Good |
| Ia 92 over South Long Creek No. 000000000051820 | Washington County | 4.6 Mi. W of Jct. US 218 | 1967 | Slab | 133 ft | 5,900 | Fair |
| 44th Street over Wanatee Creek No. 000000000504555 | Linn County | 084063200 | 2001 | Slab | 128 ft | 5,894 | Good |
| US 30 EB over Iowa River East Overflow No. 000000000700945 | Tama County | 0.6 Mi. W of Co. Rd. T47 | 2020 | Slab | 153 ft | 5,850 | Good |
| Oakdale Blvd over Muddy Creek No. 000000000504280 | Johnson County | 000000000 | 1996 | Slab | 165 ft | 5,803 | Good |
| CO Home RD over Indian Creek No. 000000000221361 | Linn County | 084060805 | 1993 | Slab | 128 ft | 5,794 | Good |
| Veterans Mempky over Ic&e RR No. 000000000505075 | Scott County | Davenport | 2009 | Slab | 191 ft | 5,619 | Good |
| Franklin ST over Branch Blue Creek No. 000000000033861 | Linn County | 000000000 | 2019 | Slab | 70 ft | 5,513 | Good |
| US 18 EB over Little Lime Creek No. 000000000606460 | Cerro Gordo County | 1.6 Mi. E of S.R. S56 | 1997 | Slab | 112 ft | 5,500 | Good |
| US 18 WB over Little Lime Creek No. 000000000606465 | Cerro Gordo County | 1.6 Mi. E of S.R. S56 | 1997 | Slab | 112 ft | 5,500 | Fair |
| US 65 over Beeds Creek No. 000000000025111 | Franklin County | 0.2 Mi. N of Ia 3 | 2020 | Slab | 45 ft | 5,500 | Good |
| US 151 over Mill Race Creek No. 000000000029571 | Iowa County | 0.4 Mi. S of Jct. 220 | 2011 | Slab | 93 ft | 5,500 | Good |
| Grand Prairie Pkwy over Sugar Creek No. 000000000505445 | Dallas County | Gppw over Sugar Creek | 2016 | Slab | 140 ft | 5,474 | Good |
| Center Point RD over East Otter Creek No. 000000000033831 | Linn County | 084070614 | 2023 | Slab | 144 ft | 5,401 | Good |
| Ia 150 over Otter Creek No. 000000000024781 | Fayette County | 0.2 Mi. N of Jct. Ia 56 | 1979 | Slab | 123 ft | 5,400 | Fair |
| US 69 over Winnebago River No. 000000000052431 | Winnebago County | 0.1 Mi. S of S Jct. Ia 9 | 1988 | Slab | 217 ft | 5,400 | Fair |
| Ia 9 over Trout Creek No. 000000000052620 | Winneshiek County | 6.1 Mi. E of Jct. U.S. 52 | 1969 | Slab | 128 ft | 5,400 | Fair |
| W Main ST over Dry Creek No. 000000000009941 | Linn County | 600 Feet West of Troy RD | 2010 | Slab | 130 ft | 5,369 | Good |
| Central Ave over BNSF RR No. 000000000504760 | Des Moines County | 700234000 | 2006 | Slab | 402 ft | 5,350 | Fair |
| US 6 over Buffalo Creek No. 000000000031490 | Johnson County | 3.0 Mi. W of Jct. I-380 | 1961 | Slab | 102 ft | 5,300 | Fair |
| Ia 175 over Mccandlesscleghorn Ditch No. 000000000036841 | Monona County | 0.6 Mi. E. of I-29 | 2023 | Slab | 101 ft | 5,300 | Good |
| US 6 & Ia 38 over Mud Creek No. 000000000037890 | Muscatine County | 0.8 Mi. E of JCT Ia 38 | 1924 | Slab | 122 ft | 5,200 | Fair |
| US 6 & Ia 38 over Iais RR No. 000000000037900 | Muscatine County | 1.2 Mi. E of Jct. Ia 38 | 1930 | Slab | 171 ft | 5,200 | Fair |
| Holiday RD over Over Cic RR No. 000000000503610 | Johnson County | 000000000 | 1979 | Slab | 102 ft | 5,126 | Fair |
| B35 255th ST over Crane Creek No. 000000000019081 | Cerro Gordo County | 096211403 | 1977 | Slab | 93 ft | 5,106 | Fair |
| Ia 150 over Hazelton Creek No. 000000000016011 | Buchanan County | 0.3 Mi. N of Jct. SR C57 | 1986 | Slab | 133 ft | 5,100 | Good |
| US 71 over Middle Raccoon River No. 000000000017191 | Carroll County | 0.7 Mi. S of US 30 | 1985 | Slab | 191 ft | 5,100 | Good |
| US 67 over Wapsipinicon Overflow No. 000000000020961 | Clinton County | 1.5 Mi. S of Sec. Rd. Z36 | 1982 | Slab | 264 ft | 5,100 | Fair |
| US 67 over Wapsipinicon Overflow No. 000000000020971 | Clinton County | 0.7 Mi. S of Folletts | 1983 | Slab | 311 ft | 5,100 | Fair |
| Ia 3 over Stream No. 000000000023991 | Dubuque County | 0.1 Mi. S of Jct. SR D10 | 1974 | Slab | 94 ft | 5,100 | Good |
| W 7th over Perry Creek No. 000000000504685 | Woodbury County | 000000000 | 1900 | Slab | 157 ft | 5,086 | Good |
| E Nevada ST over Linn Creek No. 000000000007841 | Marshall County | 084183600 | 1987 | Slab | 203 ft | 5,041 | Fair |
| EB US 30 over Brophys Creek No. 000000000020810 | Clinton County | 8.5 Mi. E of E Jct. US 61 | 1969 | Slab | 141 ft | 5,000 | Fair |
| WB US 30 over Brophys Creek No. 000000000020821 | Clinton County | 8.5 Mi. E of E Jct. US 61 | 1978 | Slab | 142 ft | 5,000 | Fair |
| US 61 over Overflow Iowa River No. 000000000033971 | Louisa County | 5.5 Mi. S of S Jct. Ia 92 | 1985 | Slab | 133 ft | 4,950 | Fair |
| US 61 over Overflow Iowa River No. 000000000033981 | Louisa County | 1.1 Mi. N of SR G62 | 1985 | Slab | 133 ft | 4,950 | Fair |
Counties with the most
| Linn County | 210 |
| Benton County | 191 |
| Kossuth County | 167 |
| Plymouth County | 143 |
| Clinton County | 115 |
| Calhoun County | 110 |
| Carroll County | 107 |
| Pocahontas County | 105 |
| Woodbury County | 94 |
| Jasper County | 94 |
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