Bridge conditions in Macon County, Illinois 346 inventoried bridges · 54 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
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 August 20, 2026 .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.
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Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected .