South Dakota County Bridge Report Cards
Compare county Bridge Condition Exposure Scores in South Dakota by condition, traffic exposure, scour-critical bridges, average age, and data completeness. View the scoring methodology.
| County | Grade | Score | Poor | Poor Traffic | Scour-Critical | Avg Age |
|---|---|---|---|---|---|---|
| Faulk County | F | 28 | 23.9% | 1,376/day | 3 | 60 yrs |
| Kingsbury County | F | 29 | 28.6% | 1,449/day | 3 | 62 yrs |
| Todd County | F | 30 | 25.9% | 5,256/day | 1 | 35 yrs |
| Hughes County | F | 30 | 20.0% | 8,140/day | 4 | 46 yrs |
| Beadle County | F | 35 | 26.7% | 6,400/day | 8 | 64 yrs |
| Codington County | F | 37 | 18.7% | 11,571/day | 7 | 49 yrs |
| Hyde County | F | 39 | 21.7% | 1,484/day | 0 | 51 yrs |
| Deuel County | F | 39 | 18.1% | 2,335/day | 11 | 54 yrs |
| Moody County | F | 41 | 20.5% | 16,638/day | 5 | 50 yrs |
| Spink County | F | 42 | 30.1% | 2,909/day | 4 | 65 yrs |
| Stanley County | F | 42 | 16.2% | 580/day | 8 | 56 yrs |
| Turner County | F | 43 | 26.6% | 4,377/day | 8 | 42 yrs |
| Bon Homme County | F | 44 | 27.0% | 3,009/day | 3 | 63 yrs |
| Edmunds County | F | 45 | 25.0% | 2,992/day | 0 | 35 yrs |
| Day County | F | 45 | 26.5% | 796/day | 0 | 54 yrs |
| Sully County | F | 45 | 19.4% | 214/day | 2 | 47 yrs |
| Charles Mix County | F | 47 | 23.3% | 1,229/day | 4 | 54 yrs |
| Miner County | F | 48 | 30.2% | 1,478/day | 0 | 52 yrs |
| Hand County | F | 48 | 31.7% | 1,546/day | 1 | 65 yrs |
| Roberts County | F | 49 | 25.3% | 2,666/day | 6 | 54 yrs |
| Marshall County | F | 50 | 34.2% | 782/day | 0 | 59 yrs |
| Tripp County | F | 50 | 24.7% | 1,415/day | 3 | 48 yrs |
| Brookings County | F | 50 | 22.8% | 12,637/day | 6 | 52 yrs |
| Union County | F | 51 | 24.3% | 11,588/day | 4 | 49 yrs |
| Bennett County | F | 51 | 20.0% | 104/day | 0 | 64 yrs |
| Brown County | F | 52 | 11.8% | 30,141/day | 8 | 42 yrs |
| Ziebach County | F | 52 | 10.0% | 616/day | 4 | 56 yrs |
| Douglas County | F | 53 | 15.9% | 1,177/day | 1 | 57 yrs |
| Hutchinson County | F | 53 | 15.0% | 3,574/day | 8 | 51 yrs |
| Davison County | F | 53 | 17.9% | 5,504/day | 4 | 52 yrs |
| Grant County | F | 54 | 18.5% | 4,821/day | 5 | 42 yrs |
| Jerauld County | F | 55 | 22.9% | 281/day | 0 | 56 yrs |
| Dewey County | F | 59 | 14.8% | 458/day | 1 | 40 yrs |
| Jackson County | D | 60 | 14.6% | 1,553/day | 3 | 56 yrs |
| Haakon County | D | 61 | 11.6% | 1,501/day | 3 | 50 yrs |
| Clay County | D | 63 | 15.1% | 1,413/day | 2 | 41 yrs |
| Butte County | D | 63 | 14.1% | 981/day | 6 | 48 yrs |
| Lincoln County | D | 64 | 15.5% | 2,510/day | 4 | 51 yrs |
| Yankton County | D | 66 | 13.1% | 5,715/day | 2 | 41 yrs |
| Aurora County | D | 66 | 11.5% | 393/day | 2 | 56 yrs |
| Mellette County | D | 66 | 7.1% | 19/day | 3 | 46 yrs |
| Hamlin County | D | 67 | 11.5% | 424/day | 3 | 47 yrs |
| Hanson County | D | 67 | 12.9% | 478/day | 2 | 48 yrs |
| Corson County | D | 69 | 8.2% | 1,458/day | 2 | 47 yrs |
| Brule County | C | 70 | 7.9% | 4,461/day | 1 | 59 yrs |
| Sanborn County | C | 70 | 13.0% | 578/day | 0 | 51 yrs |
| Lawrence County | C | 71 | 11.8% | 11,960/day | 2 | 44 yrs |
| Buffalo County | C | 71 | 4.0% | 55/day | 3 | 50 yrs |
| Meade County | C | 71 | 12.7% | 1,092/day | 4 | 46 yrs |
| Minnehaha County | C | 72 | 9.1% | 54,882/day | 15 | 40 yrs |
| Gregory County | C | 73 | 9.8% | 321/day | 1 | 49 yrs |
| Lyman County | C | 75 | 10.5% | 3,490/day | 1 | 49 yrs |
| McCook County | C | 75 | 7.1% | 702/day | 5 | 47 yrs |
| Harding County | C | 79 | 2.0% | 60/day | 4 | 40 yrs |
| Jones County | C | 79 | 5.4% | 27/day | 1 | 60 yrs |
| Pennington County | B | 82 | 6.0% | 11,907/day | 8 | 48 yrs |
| Fall River County | B | 82 | 6.2% | 710/day | 2 | 43 yrs |
| County 102 County | B | 83 | 5.7% | 60/day | 1 | 33 yrs |
| Perkins County | B | 85 | 5.0% | 215/day | 1 | 36 yrs |
| Walworth County | B | 85 | 3.0% | 183/day | 1 | 53 yrs |
| Lake County | B | 86 | 5.1% | 940/day | 1 | 48 yrs |
| Custer County | B | 86 | 5.3% | 1,313/day | 1 | 48 yrs |
| Clark County | A | 90 | 4.8% | 39/day | 0 | 36 yrs |
| McPherson County | A | 100 | 0.0% | 0/day | 0 | 48 yrs |
| Campbell County | A | 100 | 0.0% | 0/day | 0 | 47 yrs |
| Potter County | A | 100 | 0.0% | 0/day | 0 | 44 yrs |