Bridge conditions in Macon County, Illinois
346 inventoried bridges · 54 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 6 bridges in Macon County is rated in poor condition: 54 of 346 on the federal inventory, one of the higher shares in Illinois.
- 54 of the 346 bridges in Macon County, Illinois, are rated in poor condition (15.6%) in the 2025 National Bridge Inventory, as of .
- 85 bridges (24.6%) are rated good and 207 (59.8%) fair.
- The median Macon County bridge was built in 1983.
- The busiest poor-rated bridge is US 36(FAP 320) over Lake Shore Dr(u 7390 (built 1954), carrying about 20,900 vehicles a day.
Good 24.6% · Fair 59.8% · Poor 15.6% of 346 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 |
|---|---|---|---|
| US 36(FAP 320) over Lake Shore Dr(u 7390 | 1954 | 20,900 | Poor |
| Lost Bridge(fau 73 over Lake Decatur | 1961 | 9,000 | Poor |
| I-72 (WB) over FA320 (il-121) & Cn RR | 1976 | 7,000 | Poor |
| I-72 (EB) over FA320 (il-121) & Cn RR | 1976 | 6,400 | Poor |
| I-72 (WB) over Stevens Creek | 1974 | 6,400 | Poor |
| Fau 7403(CH 30) over Finley Creek | 1977 | 6,300 | Poor |
| Garfield Av(fau 73 over Il 121(FAP 320) | 1965 | 5,100 | Poor |
| Ch 30(FAU 7403) over Sand Creek Trib | 1986 | 4,550 | Poor |
| Fau 7355 over Lake Decatur | 1957 | 2,200 | Poor |
| Fau 7355(CH 24) over Lake Decatur | 1957 | 2,200 | Poor |
| Il 105(FAP 741) over Long Creek | 1961 | 2,100 | Poor |
| Fau 7406 (tr 217) over Trib Big Creek | 2005 | 1,800 | Poor |
| Ch 25(FAU 7454) over Sangamon River | 1981 | 1,300 | Poor |
| Fau 7454(CH 25) over Sangamon R Overflow | 1995 | 1,300 | Poor |
| Long CR Rd(ms 5000 over Long Creek | 1969 | 1,250 | Poor |
| Fas 554(CH 32) over Finley Creek | 1909 | 1,150 | Poor |
| Tr 108 A(fau 7424) over Stevens Creek | 1975 | 850 | Poor |
| Grove Rd(fau 7401) over Sand Creek | 1909 | 850 | Poor |
| Ch 26(CNTRY Club R over Lake Decatur | 1939 | 775 | Poor |
| Ch 19 Extension Il over Willow Branch | 1978 | 700 | Poor |
| Fas 644(CH 55) over Overflow Sangamon R | 1979 | 575 | Poor |
| Fas 644(CH 55) over Overflow of Sangamon | 1979 | 550 | Poor |
| Fau 7431 over Trib Stevens Creek | 2011 | 550 | Poor |
| Ch 49(WALMSLEY Rd) over Sand Creek | 1909 | 400 | Poor |
| TR208K(TWIN Bridge over Big Creek | 1967 | 375 | Poor |
| Fas 546(CH 21) over Trib N Fork Creek | 1983 | 300 | Poor |
| Tr 261(BLUE Mound over Dry Branch | 1973 | 275 | Poor |
| Ch 21(FAS 546) over Willow Branch | 1926 | 250 | Poor |
| Firehouse RD(1300) over Long Creek | 1960 | 225 | Poor |
| Tr 92(WOODCOCK Rd) over Willow Branch | 2003 | 225 | Poor |
| Ch 18(SCHOOL Rd) over Friends Creek | 1977 | 200 | Poor |
| Muni 6802 Sulpher over Finley Creek | 1981 | 150 | Poor |
| Ch 18(SCHOOL Rd) over Friends Creek | 1988 | 125 | Poor |
| Tr 56(GLASGOW Rd) over Stream | 1972 | 100 | Poor |
| Tr 16(MERIDIAN Rd) over Spring Creek | 1978 | 100 | Poor |
| Tr 229(ZION Chapel over Spring Creek | 1980 | 100 | Poor |
| Tr 2 B Piatt Co over Stream | 1964 | 75 | Poor |
| Tr 25(E Wise Rd) over Stevens Creek | 1977 | 75 | Poor |
| Tr 56(GLASGOW Rd) over South Fork Creek | 1975 | 75 | Poor |
| Tr 52A(BOODY Rd) over Dry Branch | 1959 | 50 | Poor |
| Tr 66(BAKER Rd) over Mosquito Creek | 1957 | 50 | Poor |
| Tr 253(DUMMERMUTH over Mosquito Creek | 1909 | 50 | Poor |
| Tr 251(HOPEWELL Rd over Finley Creek | 1979 | 50 | Poor |
| Tr 30(STRAWN Rd) over Lake Fork Creek | 1976 | 50 | Poor |
| Tr 177(RIVER Rd) over Sangamon River Trib | 1988 | 50 | Poor |
| Tr 25 over Drainage Ditch | 1985 | 50 | Poor |
| Tr 269(JACKSON Rd) over Dry Branch | 1981 | 35 | Poor |
| Tr 30A(STRAWN Rd) over South Fork Creek | 1909 | 25 | Poor |
| Tr 1A(LAKE Fork Rd over Friends Creek | 1978 | 25 | Poor |
| Tr 34(LINCOLN Memo over Willow Branch | 1976 | 25 | Poor |
| TR 46 (Drummer Rd) over Lake Fork | 1976 | 25 | Poor |
| Tr 168(CARR Rd) over Finley Creek | 1981 | 25 | Poor |
| Tr 148A(SANNER Rd) over Long Grove Creek | 1990 | 25 | Poor |
| Tr 1(LAKE Fork Rd) over Ditch | 1963 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 322(US 51) over I-72 | 2011 | 24,400 | Fair |
| US 51 NB (fap 710) over Lake Decatur | 1962 | 22,400 | Fair |
| US 51 SB (fap 710) over Lake Decatur | 1971 | 22,400 | Fair |
| US 36(FAP 320) over Lake Shore Dr(u 7390 | 1954 | 20,900 | Poor |
| US 36(FAP 320) over Lake Decatur | 1955 | 20,900 | Fair |
| Fap 320(IL 121) over NS RR | 1991 | 18,900 | Fair |
| Fap 320(IL 121 & 4 over Spring Creek | 1971 | 17,900 | Fair |
| Fap 320(IL 121) over Waterway | 1982 | 15,100 | Fair |
| Fap 716 (il 48) over Spring Creek | 2007 | 14,800 | Fair |
| Mound Rd(fau 7359) over Spring Creek | 1964 | 13,700 | Good |
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.