Bridge conditions in McLean County, Illinois
625 inventoried bridges · 16 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
16 of the 625 bridges the federal inventory lists in McLean County are rated poor; the rest split 379 good and 230 fair.
- 16 of the 625 bridges in McLean County, Illinois, are rated in poor condition (2.6%) in the 2025 National Bridge Inventory, as of .
- 379 bridges (60.6%) are rated good and 230 (36.8%) fair.
- The median McLean County bridge was built in 1980.
- The busiest poor-rated bridge is I-55 Busn Loop over Norfolk Southern Railway (built 1940), carrying about 25,000 vehicles a day.
Good 60.6% · Fair 36.8% · Poor 2.6% of 625 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 |
|---|---|---|---|
| I-55 Busn Loop over Norfolk Southern Railway | 1940 | 25,000 | Poor |
| Vernon Avenue over Sugar Creek N Branch | 1968 | 10,400 | Poor |
| Brown St Fau 6387 over Bnsd Outfall Sewer | 1925 | 4,100 | Poor |
| Fau 6431 Ch 29 over I-74/SE of Bloomngtn | 1968 | 3,050 | Poor |
| US 24/FAP 317 over Intermit Stream | 1959 | 2,650 | Poor |
| Towanda AVE(FAU641 over I-55/N of Normal | 1962 | 2,650 | Poor |
| Jersey Ave Fau 635 over Sugar CR | 1964 | 2,550 | Poor |
| Fau 6437 Ch 36 over I-74 Near Downs | 1968 | 2,450 | Poor |
| Ill 9 over Stream | 1925 | 2,100 | Poor |
| Fau 6374 Ch 30 over I-74/SE of Bloomngtn | 1968 | 1,700 | Poor |
| Fas 1473 over I-74 | 1963 | 1,450 | Poor |
| Fau 6434/CH 34 over I-55 | 1976 | 1,025 | Poor |
| Franklin St over Br Sugar Creek | 1940 | 725 | Poor |
| Adams Street over Branch Money Creek | 1938 | 175 | Poor |
| Marion & Rosney over Cntryclb Br Sugar CR | 1946 | 125 | Poor |
| Taylor Street over Branch Money Creek | 1972 | 125 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-55/74 (NB & SB) over Unnamed Creek | 1991 | 42,100 | Fair |
| I-55 Busn Lp NB & over Sugar CR & Bike Path | 2000 | 41,100 | Fair |
| Fai 74 over Ditch | 1966 | 28,400 | Good |
| I-55 & FAS294 over Stream | 1976 | 25,400 | Fair |
| I-55 Busn Loop over US 51 at Bloomington | 1939 | 25,000 | Fair |
| I-55 Busn Loop over Norfolk Southern Railway | 1940 | 25,000 | Poor |
| I-55 Busn Loop over Bunn Street | 1940 | 25,000 | Good |
| Fap 730 US 51 over Pedestrian Walkway | 1983 | 23,500 | Fair |
| I-55 over Trib of Turkey CR | 1974 | 23,400 | Good |
| I-74 over Drainage Ditch | 1969 | 21,600 | 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.