Bridge conditions in Hancock County, Illinois
290 inventoried bridges · 63 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Hancock County has 63 bridges rated poor out of 290 inventoried, a 21.7% share that puts it well above the national rate of about 7%.
- 63 of the 290 bridges in Hancock County, Illinois, are rated in poor condition (21.7%) in the 2025 National Bridge Inventory, as of .
- 122 bridges (42.1%) are rated good and 105 (36.2%) fair.
- The median Hancock County bridge was built in 1983.
- The busiest poor-rated bridge is Fap 685 Ill 9 over Mississippi River (built 1927), carrying about 2,500 vehicles a day.
Good 42.1% · Fair 36.2% · Poor 21.7% of 290 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 685 Ill 9 over Mississippi River | 1927 | 2,500 | Poor |
| Fas 1600 over Railroad Creek | 1960 | 2,300 | Poor |
| Il 9 over Ditch | 1928 | 950 | Poor |
| Fas-428 (ch-11) over Bear Creek | 1952 | 500 | Poor |
| Fas 424 over Camp Creek | 1968 | 450 | Poor |
| Co. Hwy. 12 over Petit Creek | 1979 | 350 | Poor |
| Ch 20 over Williams Creek | 1972 | 325 | Poor |
| Fas 1425 over Big Meadow Ditch | 1961 | 325 | Poor |
| Co Hwy 17 over La Harpe Creek | 1949 | 225 | Poor |
| Tr 72 over Little Bear Creek | 1965 | 225 | Poor |
| Fas 431 over Mud Creek | 1959 | 200 | Poor |
| Tr 46 over Chaney Creek | 1956 | 200 | Poor |
| Tr 84 over Little Bear Creek | 1972 | 175 | Poor |
| Tr 154 over Grove Creek | 1965 | 150 | Poor |
| 2ND Street over Railroad Creek | 1974 | 150 | Poor |
| Middle Rd over Drainage Ditch | 1904 | 150 | Poor |
| 4TH St/ms 1020 over Spilling Creek | 1900 | 150 | Poor |
| Tr No 244 over Brhof Spring Creek | 1977 | 125 | Poor |
| Tr 244 over Spring Creek | 1983 | 125 | Poor |
| Ms 1160 over Drainage Ditch | 1920 | 125 | Poor |
| Co. Hwy. 3 over Little Creek | 1966 | 100 | Poor |
| Co Hwy 31 over Middle Creek | 1970 | 100 | Poor |
| Tr 163 over La Moine River | 1980 | 100 | Poor |
| Tr 166 over Camp Creek | 1923 | 100 | Poor |
| Tr 7 over Camp Creek | 1962 | 100 | Poor |
| Tr 266 over La Moine River | 1915 | 100 | Poor |
| Tr 225 over West Fork Bear CR | 1981 | 100 | Poor |
| Tr 211 over Prairie Creek | 1976 | 75 | Poor |
| Tr 229 over Middle Creek | 1961 | 75 | Poor |
| Tr 71 over Tilton Creek | 1928 | 75 | Poor |
| Tr 344 over Little Creek | 1974 | 75 | Poor |
| Tr 91 over Grove Creek | 1966 | 75 | Poor |
| Tr 2 over Drainage Ditch | 1974 | 75 | Poor |
| Tr 93 over N Fk of Riley Crek | 1974 | 75 | Poor |
| Co Hwy 28 over Middle Creek | 1980 | 50 | Poor |
| Tr 278 over Flour Creek | 1963 | 50 | Poor |
| Tr 306 over Flour Creek | 1969 | 50 | Poor |
| Tr 90 over Fk of Little Bear CR | 1977 | 50 | Poor |
| Tr 57 over Branch of Camp Creek | 1925 | 50 | Poor |
| Tr 186 over Branch of Tilton CR. | 1919 | 50 | Poor |
| Tr 27 over Branch of Spring CR. | 1950 | 50 | Poor |
| Tr 99 over La Harpe | 1974 | 50 | Poor |
| Tr 302 over Cedar Creek | 1979 | 50 | Poor |
| Tr 221 over E Fk of Lamoine R. | 1981 | 50 | Poor |
| Tr 239A over Middle Creek | 1917 | 50 | Poor |
| Tr 226 over Trib of Spring CR | 1919 | 50 | Poor |
| Tr 290 over Spring Creek | 1911 | 50 | Poor |
| Tr 400 over La Moine River | 1967 | 50 | Poor |
| Tr 224A over Short Creek | 1908 | 50 | Poor |
| Tr I16 over W Fk of Bear Creek | 1969 | 50 | Poor |
| Tr 166 over Grove Creek | 1961 | 50 | Poor |
| Tr 104 over Panther Creek | 1968 | 50 | Poor |
| Tr 46 over Riley Creek | 1971 | 50 | Poor |
| Tr 123 over N Branch of Larry Ck | 1960 | 50 | Poor |
| Tr 243 over Trib of W Fk Bear CR | 1999 | 50 | Poor |
| Tr 327 over Little Bear Creek | 1976 | 50 | Poor |
| Tr 306 over Williams Creek | 1969 | 25 | Poor |
| Tr 198A over Slater Creek | 1963 | 25 | Poor |
| Tr 361 over Panther Creek | 1982 | 25 | Poor |
| Tr 39 over Branch of Tilton CR. | 1914 | 25 | Poor |
| Tr 228 over Trib of Bronson CR | 1909 | 25 | Poor |
| Fas 1425 over Rock Creek | 1988 | 20 | Poor |
| Tr 180 over Short Creek | 1917 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 136 over Hamilton Slough | 1954 | 10,500 | Good |
| US 136 over Miss R/1ST/KEOKUK Jct RR | 1985 | 10,500 | Fair |
| Il 336 over Trib to Praire CR | 2006 | 4,200 | Good |
| Il 94 (NB) over Slater Creek | 2003 | 4,050 | Fair |
| Il 94 (SB) over Slater Creek | 2002 | 4,050 | Fair |
| US 136 over Il 336 | 2006 | 4,000 | Good |
| US 136 WB over Prairie Creek | 2007 | 4,000 | Good |
| US 136 EB over Prairie Creek | 2007 | 4,000 | Good |
| US136/336 over Trib to Prarie CR | 2007 | 4,000 | Good |
| Il 94 over Long Creek | 1984 | 3,750 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Illinois: Illinois bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.