Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
0.9pp vs national avg 7.0%
Illinois vs national bridge condition
Illinois — Good condition share 41.2%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois — Structurally deficient share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Illinois (FHWA NBI)
Counties (102)
Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222
Illinois vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
FAI 64 EB
FairOver: LITTLE SILVER CREEK
1.5 MI W OF ILL 4, St. Clair, IL
Built 1971 Load: 34.3 t ADT: 20,950
US 20 WB
FairOver: SILVER CREEK
.5 MI E SPRINGFLD RD, Stephenson, IL
Built 1987 Load: 34.3 t ADT: 6,200
SB ILL 116
FairOver: TEN MILE CREEK
N JCT ILL 116 & 26, Tazewell, IL
Built 1971 Load: 34.3 t ADT: 16,200
US 150
FairOver: BULL RUN CREEK
EAST OF MORTON, Tazewell, IL
Built 1985 Load: 34.3 t ADT: 5,400
FAS 513(CH 18)
FairOver: LITTLE VERMILION RIV
0.2 MI N OF SIDELL, Vermilion, IL
Built 1949 Load: 34.3 t ADT: 950
FAS 506(CH 7)
FairOver: STREAM
3 MI W OF GEORGETOWN, Vermilion, IL
Built 1974 Load: 34.3 t ADT: 750
FULFS ROAD
FairOver: SPRING CREEK
4 MI NW OF STERLING, Whiteside, IL
Built 1956 Load: 34.3 t ADT: 400
KENNEDY RD
FairOver: CEDAR CREEK
2 MI NE ALBANY, Whiteside, IL
Built 1957 Load: 34.3 t ADT: 600
LYNDON ROAD
FairOver: FRENCH CREEK
0.9 MI N JCT US 30, Whiteside, IL
Built 2002 Load: 34.3 t ADT: 800
CAPP ROAD
FairOver: LITTLE ROCK CREEK
5 MI N OF MORRISON, Whiteside, IL
Built 1977 Load: 34.3 t ADT: 100
BLODGETT RD
FairOver: GRANT CREEK
0.25 Mi West of I-55, Will, IL
Built 1961 Load: 34.3 t ADT: 600
IL 59
FairOver: DU PAGE RIVER
0.1 M S US 52, Will, IL
Built 1991 Load: 34.3 t ADT: 19,300
BURVILLE RD
FairOver: PLUM CR
.2 E OF ILL 394, Will, IL
Built 1919 Load: 34.3 t ADT: 3,500
ILL 70
FairOver: DRAINAGE DITCH
.2 MI E OF LEECH RD, Winnebago, IL
Built 1932 Load: 34.3 t ADT: 3,000
HARLEM RD/BAUER PK
FairOver: ICE LINE RAILROAD
0.2 MI. E. OF IL 2, Winnebago, IL
Built 1989 Load: 34.3 t ADT: 11,300
ILL 89
FairOver: RICHLAND CREEK
5.95 MI N OF ILL 116, Woodford, IL
Built 1983 Load: 34.3 t ADT: 3,550
TR 123A
FairOver: ORCHARD CREEK
.4 M.S. OF THEBES, Alexander, IL
Built 1977 Load: 34.7 t ADT: 10
TR 197
FairOver: BEAVER CREEK
3.25M S GREENVILLE, Bond, IL
Built 1979 Load: 34.7 t ADT: 75
HUBER ROAD
FairOver: MOSQUITO CREEK
3.5 MI SE BELVIDERE, Boone, IL
Built 1977 Load: 34.7 t ADT: 150
FAS 253/CH 10
FairOver: BUREAU CO DITCH
6 MI. N. OF MINERAL, Bureau, IL
Built 2005 Load: 34.7 t ADT: 200
ILL 84
FairOver: PLUM RIVER
1.0 MI S JCT ILL 64, Carroll, IL
Built 1978 Load: 34.7 t ADT: 4,200
TR 71A
FairOver: WILLOW BRANCH
2.5 MI NNW MOWEAQUA, Christian, IL
Built 1996 Load: 34.7 t ADT: 100
US 40(FAS 1707)
FairOver: CROOKED CREEK
1 MI W. OF I-70, Clark, IL
Built 1951 Load: 34.7 t ADT: 4,300
FAP-327 (US-50)
FairOver: LITTLE WABASH RIVER
2 MI W RICHLAND C L, Clay, IL
Built 1953 Load: 34.7 t ADT: 4,000
TR 168
FairOver: RILEY CREEK
1 MI W CHARLESTON, Coles, IL
Built 1980 Load: 34.7 t ADT: 500
ASHLAND AVE
FairOver: CAL SAG CHANNEL
1 M S 127TH ST, Cook, IL
Built 1933 Load: 34.7 t ADT: 17,700
IL 43 (WAUKEGAN R
FairOver: W FK N BR CHI RIV
0.1 M S GLENVIEW RD, Cook, IL
Built 1927 Load: 34.7 t ADT: 18,900
IL 83 (KINGERY HW
FairOver: RR - CN
0.1 M N 107TH ST, Cook, IL
Built 1959 Load: 34.7 t ADT: 32,400
HOWARD ST
FairOver: N SHORE CHANNEL
2.7 M E I-94, Cook, IL
Built 1951 Load: 34.7 t ADT: 15,000
SCHAUMBURG RD
FairOver: SALT CR
0.5 M W MEACHAM P22, Cook, IL
Built 1936 Load: 34.7 t ADT: 23,500
KEDZIE AVE
FairOver: N BR CHICAGO RIVER
5150 N & 3200 W, Cook, IL
Built 1914 Load: 34.7 t ADT: 12,900
KIMBALL AVE
FairOver: N BR CHICAGO RIVER
5000 N & 3400 W, Cook, IL
Built 1919 Load: 34.7 t ADT: 9,700
CUSTER AVE
FairOver: CTA SKOKIE SWIFT
0.18 M N HOWARD P6, Cook, IL
Built 1982 Load: 34.7 t ADT: 2,500
IL 23 & 72
FairOver: DEER CREEK
0.5 MI W JCT IL 23 N, DeKalb, IL
Built 1987 Load: 34.7 t ADT: 8,100
FAI-57 NB
FairOver: LITTLE WABASH RIVER
.5 MI S WATSON INT, Effingham, IL
Built 1963 Load: 34.7 t ADT: 9,250
FAI-57 SB
FairOver: LITTLE WABASH RIVER
.5 MI S WATSON INT, Effingham, IL
Built 1963 Load: 34.7 t ADT: 9,250
FAI-57 SB
FairOver: DISMAL CREEK
5.5 MI N FARINA INT, Fayette, IL
Built 1969 Load: 34.7 t ADT: 9,450
IL 9/FAP 697
FairOver: IL CENT. RR
PATTON ST IN PAXTON, Ford, IL
Built 2001 Load: 34.7 t ADT: 5,750
ILL 149
FairOver: TILLEY CREEK
3.4 MI W ILL 34, Franklin, IL
Built 1928 Load: 34.7 t ADT: 2,050
MILE LOAD RD-TR 42
FairOver: TATER CR
SW-6-T4NR3E, Fulton, IL
Built 1972 Load: 34.7 t ADT: 50
TR 240
FairOver: BEAR CREEK
4.7 M SW ROCKBRIDGE, Greene, IL
Built 1977 Load: 34.7 t ADT: 50
IL 96
FairOver: DRAINAGE DITCH
5.8M S NAUVOO CENTER, Hancock, IL
Built 1936 Load: 34.7 t ADT: 1,050
CH 2
FairOver: MUD CREEK
0.5 MI N OF CH-7, Jackson, IL
Built 1978 Load: 34.7 t ADT: 225
I 64 EB
FairOver: E&W RR
2 MI E ILL-142, Jefferson, IL
Built 1974 Load: 34.7 t ADT: 6,350
I 64 EB
FairOver: BIG MUDDY RIVER
1.3 MI E WOODLAN INT, Jefferson, IL
Built 1974 Load: 34.7 t ADT: 14,150
I 64 WB
FairOver: BIG MUDDY RIVER
1.3 MI E WOODLAN INT, Jefferson, IL
Built 1974 Load: 34.7 t ADT: 14,150
FAS-2869 (ILL-37)
FairOver: DODDS CREEK
3.7 MI S ILL-148, Jefferson, IL
Built 1985 Load: 34.7 t ADT: 4,150
FAS-826 (CH-10)
FairOver: HARPER CREEK
1.5 NW MT VERNON, Jefferson, IL
Built 1988 Load: 34.7 t ADT: 2,450
IL 267
FairOver: MACOUPIN CREEK
ROCK BRIDGE; CO LINE, Jersey, IL
Built 1941 Load: 34.7 t ADT: 2,150
US 20 AND ILL 84
FairOver: SMALLPOX CREEK
3.8 MI SE OF GALENA, Jo Daviess, IL
Built 1971 Load: 34.7 t ADT: 5,750
Showing 10,651-10,700 of 27,743 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.