Illinois County Bridge Report Cards
Compare county Bridge Condition Exposure Scores in Illinois 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 |
|---|---|---|---|---|---|---|
| Lawrence County | F | 32 | 22.7% | 92,265/day | 2 | 49 yrs |
| Fulton County | F | 45 | 21.1% | 24,455/day | 0 | 48 yrs |
| Peoria County | F | 46 | 17.9% | 377,760/day | 2 | 42 yrs |
| Grundy County | F | 49 | 28.4% | 86,325/day | 2 | 41 yrs |
| Cass County | F | 50 | 17.1% | 10,525/day | 0 | 39 yrs |
| McHenry County | F | 52 | 21.1% | 69,925/day | 4 | 42 yrs |
| Bond County | F | 54 | 11.1% | 90,875/day | 0 | 54 yrs |
| Hancock County | F | 54 | 21.7% | 12,190/day | 1 | 47 yrs |
| Macoupin County | F | 55 | 16.7% | 16,565/day | 0 | 59 yrs |
| Iroquois County | F | 56 | 14.6% | 85,945/day | 2 | 46 yrs |
| Tazewell County | F | 56 | 14.8% | 285,485/day | 1 | 50 yrs |
| Mercer County | F | 57 | 14.1% | 6,360/day | 4 | 43 yrs |
| Cook County | F | 59 | 14.3% | 6,589,000/day | 4 | 56 yrs |
| Christian County | F | 59 | 17.2% | 8,400/day | 1 | 56 yrs |
| Macon County | D | 61 | 15.6% | 87,405/day | 0 | 41 yrs |
| Brown County | D | 63 | 14.1% | 900/day | 1 | 51 yrs |
| Henderson County | D | 64 | 12.7% | 14,650/day | 1 | 41 yrs |
| LaSalle County | D | 65 | 14.2% | 82,555/day | 2 | 47 yrs |
| Bureau County | D | 65 | 16.0% | 20,040/day | 0 | 47 yrs |
| Henry County | D | 66 | 12.8% | 79,685/day | 0 | 47 yrs |
| Carroll County | D | 66 | 14.4% | 6,200/day | 1 | 47 yrs |
| Clay County | D | 68 | 14.4% | 4,435/day | 0 | 43 yrs |
| Cumberland County | D | 69 | 7.1% | 65,725/day | 0 | 46 yrs |
| Knox County | D | 69 | 10.5% | 53,835/day | 0 | 43 yrs |
| DeKalb County | D | 69 | 12.6% | 47,485/day | 0 | 44 yrs |
| Warren County | C | 70 | 7.5% | 38,520/day | 0 | 41 yrs |
| Pulaski County | C | 71 | 9.3% | 18,195/day | 0 | 44 yrs |
| Woodford County | C | 71 | 9.8% | 38,100/day | 1 | 40 yrs |
| Will County | C | 72 | 9.9% | 692,910/day | 1 | 42 yrs |
| Kankakee County | C | 72 | 9.9% | 82,925/day | 0 | 43 yrs |
| Jo Daviess County | C | 72 | 10.9% | 9,150/day | 0 | 52 yrs |
| Marshall County | C | 72 | 12.3% | 5,150/day | 1 | 41 yrs |
| St. Clair County | C | 73 | 9.3% | 538,925/day | 2 | 48 yrs |
| Boone County | C | 73 | 10.1% | 17,500/day | 2 | 39 yrs |
| Monroe County | C | 74 | 8.3% | 33,850/day | 2 | 39 yrs |
| Whiteside County | C | 74 | 8.3% | 8,245/day | 12 | 48 yrs |
| Gallatin County | C | 75 | 7.3% | 5,495/day | 0 | 40 yrs |
| Jefferson County | C | 75 | 8.1% | 104,295/day | 0 | 42 yrs |
| Pike County | C | 75 | 10.2% | 24,920/day | 0 | 46 yrs |
| Menard County | C | 75 | 11.2% | 2,250/day | 0 | 46 yrs |
| Kendall County | C | 75 | 11.5% | 12,100/day | 0 | 36 yrs |
| Marion County | C | 76 | 7.5% | 45,560/day | 1 | 52 yrs |
| Lake County | C | 76 | 9.6% | 78,685/day | 3 | 49 yrs |
| Lee County | C | 76 | 11.3% | 9,380/day | 1 | 45 yrs |
| Randolph County | C | 77 | 6.7% | 16,350/day | 1 | 44 yrs |
| Putnam County | C | 77 | 6.0% | 6,100/day | 1 | 41 yrs |
| Alexander County | C | 77 | 8.6% | 9,750/day | 0 | 44 yrs |
| Ford County | C | 78 | 7.9% | 13,185/day | 0 | 42 yrs |
| Champaign County | C | 78 | 8.1% | 132,485/day | 0 | 43 yrs |
| Livingston County | C | 78 | 7.9% | 25,510/day | 5 | 47 yrs |
| Madison County | C | 78 | 8.8% | 224,575/day | 0 | 46 yrs |
| Moultrie County | C | 78 | 9.3% | 6,000/day | 0 | 40 yrs |
| Schuyler County | C | 78 | 10.4% | 550/day | 0 | 44 yrs |
| Greene County | C | 79 | 6.8% | 7,985/day | 0 | 45 yrs |
| Perry County | C | 79 | 7.4% | 9,365/day | 0 | 44 yrs |
| Logan County | C | 79 | 9.2% | 9,405/day | 0 | 50 yrs |
| Washington County | B | 80 | 6.0% | 39,570/day | 1 | 51 yrs |
| Jackson County | B | 81 | 7.0% | 36,935/day | 0 | 37 yrs |
| Hardin County | B | 81 | 6.6% | 1,635/day | 0 | 50 yrs |
| Coles County | B | 81 | 7.0% | 37,350/day | 0 | 43 yrs |
| Scott County | B | 81 | 7.1% | 8,000/day | 0 | 42 yrs |
| White County | B | 81 | 6.6% | 14,355/day | 1 | 39 yrs |
| Kane County | B | 81 | 7.1% | 206,525/day | 2 | 40 yrs |
| Piatt County | B | 81 | 5.7% | 14,225/day | 4 | 46 yrs |
| Winnebago County | B | 81 | 6.9% | 170,200/day | 3 | 48 yrs |
| Adams County | B | 82 | 6.0% | 26,575/day | 1 | 49 yrs |
| Stark County | B | 82 | 5.4% | 2,400/day | 1 | 43 yrs |
| Morgan County | B | 82 | 7.3% | 12,870/day | 1 | 42 yrs |
| Shelby County | B | 82 | 7.8% | 4,295/day | 0 | 47 yrs |
| Wayne County | B | 82 | 7.9% | 4,145/day | 1 | 42 yrs |
| Ogle County | B | 82 | 7.4% | 10,300/day | 4 | 44 yrs |
| Massac County | B | 83 | 8.3% | 2,110/day | 0 | 45 yrs |
| Sangamon County | B | 84 | 6.0% | 91,635/day | 0 | 45 yrs |
| Vermilion County | B | 84 | 6.3% | 29,790/day | 1 | 46 yrs |
| DuPage County | B | 84 | 7.5% | 179,025/day | 0 | 40 yrs |
| Edwards County | B | 84 | 7.6% | 425/day | 0 | 44 yrs |
| Union County | B | 85 | 3.7% | 24,950/day | 1 | 44 yrs |
| Clark County | B | 85 | 3.9% | 37,225/day | 1 | 47 yrs |
| Pope County | B | 85 | 4.6% | 2,800/day | 0 | 42 yrs |
| Jersey County | B | 85 | 5.3% | 5,900/day | 0 | 45 yrs |
| Effingham County | B | 85 | 4.7% | 37,370/day | 0 | 51 yrs |
| Clinton County | B | 85 | 6.8% | 7,150/day | 0 | 49 yrs |
| McDonough County | B | 86 | 6.2% | 4,120/day | 0 | 44 yrs |
| Crawford County | B | 86 | 5.6% | 3,320/day | 1 | 42 yrs |
| Jasper County | B | 87 | 4.4% | 4,725/day | 0 | 43 yrs |
| Fayette County | B | 87 | 4.5% | 27,770/day | 1 | 49 yrs |
| Rock Island County | B | 87 | 4.8% | 79,325/day | 0 | 43 yrs |
| Williamson County | B | 88 | 3.5% | 58,775/day | 0 | 40 yrs |
| Edgar County | B | 88 | 4.0% | 4,375/day | 1 | 48 yrs |
| Calhoun County | B | 88 | 4.9% | 1,300/day | 0 | 42 yrs |
| De Witt County | B | 88 | 5.7% | 4,325/day | 0 | 46 yrs |
| Saline County | B | 89 | 4.3% | 10,235/day | 0 | 40 yrs |
| Wabash County | B | 89 | 5.6% | 310/day | 0 | 42 yrs |
| McLean County | A | 92 | 2.6% | 60,275/day | 2 | 44 yrs |
| Montgomery County | A | 92 | 3.8% | 1,875/day | 0 | 48 yrs |
| Richland County | A | 92 | 4.0% | 280/day | 0 | 46 yrs |
| Hamilton County | A | 93 | 2.4% | 3,400/day | 0 | 35 yrs |
| Franklin County | A | 93 | 2.9% | 12,425/day | 0 | 42 yrs |
| Stephenson County | A | 93 | 3.2% | 4,450/day | 0 | 48 yrs |
| Mason County | A | 93 | 3.5% | 100/day | 0 | 45 yrs |
| Johnson County | A | 95 | 2.5% | 454/day | 0 | 47 yrs |
| Douglas County | A | 96 | 1.7% | 4,500/day | 0 | 43 yrs |