Bridge conditions in Madison County, Illinois 524 inventoried bridges · 46 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
Madison County tracks close to typical: 46 of its 524 inventoried bridges (8.8%) are rated poor, against a national rate of about 7%.
46 of the 524 bridges in Madison County, Illinois, are rated in poor condition (8.8%) in the 2025 National Bridge Inventory, as of August 20, 2026 .247 bridges (47.1%) are rated good and 231 (44.1%) fair.
The median Madison County bridge was built in 1984 .
The busiest poor-rated bridge is Fai 270 EB over County Ditch (built 1963), carrying about 24,900 vehicles a day.
Good 47.1% · Fair 44.1% · Poor 8.8% of 524 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 Fai 270 EB over County Ditch 1963 24,900 Poor Fai 270 WB over County Ditch 1963 24,900 Poor I-255 SB over 162 Abandon UPRR 2 trail 1987 20,250 Poor Fai 255 NB over Horseshoe Lake Road 1987 20,150 Poor Fai 255 SB over Horseshoe Lake Road 1987 20,150 Poor I-255 NB over 162 Abandon UPRR 2 trail 1987 20,150 Poor Il 111/3-homer Ada over Rogers Av & Bloomer 1958 17,200 Poor Cntr Grove/ Fau 88 over Mct Bike Trail 1989 12,600 Poor Il 157 / Il 162 over Judys Branch Creek 1933 10,600 Poor Il 140 over Trib to Indian Creek 1927 8,050 Poor Alby St/ Fau 8988 over US Route 67 1961 5,750 Poor Il 140 over Paddock Creek Branch 1927 5,650 Poor N Seminary /fau 89 over Black Creek 1966 5,100 Poor Ill 111 SB over Cahokia Canal 1961 4,050 Poor Brown St./ Fau 896 over Rockspring Creek 1955 4,000 Poor N Siu Ent Rd NB over Nsrr 1968 2,775 Poor N Siu Ent Rd SB over Nsrr 1968 2,775 Poor Elm St./ Fau 8989 over US Route 67 1946 2,750 Poor New Douglas Rd over Silver Creek 1991 1,400 Poor Ch 31 Ellis Rd over Buckeye Br 1972 1,200 Poor Tr 115 (harris Lan over W Fork Wood River Ck 1990 1,100 Poor Fairmont Lane over Fai 55/70/US 40 1960 1,050 Poor Maple Grove RD/TR2 over Wendall Br 1978 1,050 Poor Ch 21 Staunton Rd over Wendell Br 1968 1,000 Poor CH61/AIRPORT Road over Piasa Creek 1958 650 Poor Fas 773/ Alhambra over Silver Ck 1971 600 Poor OR-5 ChainOfRocksR over Chain of Rocks Cn & 2 LR 1949 525 Poor MS-1980 Willow Crk over Trib to Dunlap Lake 1991 525 Poor BLACK LANE ramp over Fai 70 1960 475 Poor Ch 32 Lebanon Rd over Silver Ck 1970 350 Poor Tr 172 over Penn Central RR 1901 350 Poor Lowr Marine RD/TR2 over Sugar Fork Creek 1963 300 Poor Buckeye Rd/ Tr 371 over Sugar Ck 1971 300 Poor Lee Rd/ Tr 89 over Sugar Ck 1965 275 Poor Ch 49 Wieseman Rd. over West Fork Cahokia CR 1988 275 Poor Stonebrooke Dr over Trib to Dunlap Lake 1997 250 Poor Tr 288 over Conrail RR 1901 225 Poor Zilles Rd/ Tr 392 over Trib to Spanker Br 1925 150 Poor Pebble Creek Drive over Black Creek 1991 150 Poor Church Rd over Fai 55/i-55 Fr 11.45 1966 100 Poor Gorenz Dr/tr 143 over Trib to Silver CR 1971 100 Poor Ch 14 Sherry Creek over Sherry Creek 1984 100 Poor Tr 167 Rock Hill over Indian Creek 1997 100 Poor Tr 194/LONGHI Road over Trib to Canteen Ck 1984 75 Poor Cedar Rd/ Tr 276 over Lake Fork 1976 50 Poor Goodall Rd/ Tr 227 over Silver CR Trib 1976 50 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition Fai 270 over Mississippi River 1966 46,200 Fair I-270 EB & WB over Chain of Rocks Canal 2014 46,200 Good Fai 270 EB over Mississippi River 2024 46,200 Good Fai 270 over Water Main 1964 46,200 Good I-55/70 over Brush Creek 1962 46,000 Fair Fai 70 over Canteen Ck 1939 45,600 Good Fai 255 over Mcdonough Lake Ditch 1987 40,300 Good Fai 255 over Schnieder Ditch 1985 40,200 Good Il 255 NB over Ramp 255NB to 270WB 1994 36,500 Fair Il 255 SB over Ramp 255NB to 270WB 1994 36,500 Fair
Source: FHWA National Bridge Inventory , 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Madison County →
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 .