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
US 30
FairOver: STREAM
0.2 MI W OF I-39, Lee, IL
Built 1984 Load: 32.4 t ADT: 1,450
I 39&US 51
FairOver: WILLOW CREEK
2 MI S OF US 30, Lee, IL
Built 1983 Load: 32.4 t ADT: 18,700
I 39&US 51
FairOver: WILLOW CREEK
1 MI S OF US 30, Lee, IL
Built 1983 Load: 32.4 t ADT: 18,700
PERRY ROAD
FairOver: STEWARD CREEK
0.9 M W OF STEWARD, Lee, IL
Built 1985 Load: 32.4 t ADT: 575
SHAW ROAD
FairOver: GREEN RIVER
1.25 MI E OF AMBOY, Lee, IL
Built 1984 Load: 32.4 t ADT: 550
ASHTON RD-CH 23
FairOver: BEACH CREEK
1 MI SE OF ASHTON, Lee, IL
Built 2016 Load: 32.4 t ADT: 200
CH 15 HARMON RD
FairOver: 3 MILE BRANCH
.6 MI S. ROCK ISL RD, Lee, IL
Built 1997 Load: 32.4 t ADT: 325
FAS 1180 KEIGWIN R
FairOver: GREEN RIVER
7 MI S OF HARMON, Lee, IL
Built 2012 Load: 32.4 t ADT: 25
FAS 178 PAW PAW RD
FairOver: BR OF WILLOW CREEK
4 MI N OF PAW PAW, Lee, IL
Built 2012 Load: 32.4 t ADT: 250
REYNOLDS RD
FairOver: STEWARD CR
2.6 MI SE STEWARD, Lee, IL
Built 1978 Load: 32.4 t ADT: 10
TOWN LINE RD
FairOver: STEWARD CREEK
0.5 MI N PERRY RD, Lee, IL
Built 1980 Load: 32.4 t ADT: 125
CH 12 KEIGWIN RD
FairOver: GREEN RIVER OVERFLOW
1.0 MI E OF CH 15, Lee, IL
Built 2011 Load: 32.4 t ADT: 25
MORGAN RD (TR 112-
FairOver: UNNAMED STREAM
.2 MI N STERLING RD, Lee, IL
Built 1989 Load: 32.4 t ADT: 100
STERLING RD (MS100
FairOver: BR OF MAIN DITCH
3 MI. W. OF AMBOY, Lee, IL
Built 1989 Load: 32.4 t ADT: 950
MERIDIAN RD
FairOver: GREEN RIVER TRIB
1.8 MI N OF US 30, Lee, IL
Built 1980 Load: 32.4 t ADT: 25
COTTAGE HILL RD
FairOver: BUREAU CREEK
0.3 MI E OF IL 251, Lee, IL
Built 1982 Load: 32.4 t ADT: 25
REUTER RD
FairOver: GREEN RIVER TRIB
3.8 MI S WALTON, Lee, IL
Built 1980 Load: 32.4 t ADT: 50
EASY RD
FairOver: TRIB GREEN RIVER
2.0 MI W OF ILL 26, Lee, IL
Built 1978 Load: 32.4 t ADT: 25
CARTER ROAD
FairOver: GREEN RIVER TRIB
2.5 MI N MAYTOWN RD, Lee, IL
Built 1980 Load: 32.4 t ADT: 10
PUMP FACTORY RD.
FairOver: GREEN RIVER
1 MI N OF CONS AREA, Lee, IL
Built 1981 Load: 32.4 t ADT: 50
SCOUT ROAD
FairOver: GREEN RIVER TRIB
3.5 M S OF WALTON, Lee, IL
Built 1983 Load: 32.4 t ADT: 50
GAME ROAD
FairOver: TRIB OF GREEN RIVER
1.1 M S OF MAYTOWN R, Lee, IL
Built 1985 Load: 32.4 t ADT: 25
PUMP FACTORY RD
FairOver: TRIB OF GREEN RIVER
1.1 M N OF BUREAU CL, Lee, IL
Built 1985 Load: 32.4 t ADT: 25
EAKLE RD
FairOver: GREEN RIVER
1.7 MI N BUREAU CO L, Lee, IL
Built 1978 Load: 32.4 t ADT: 50
HARMON RD
FairOver: BASS DITCH
1.5 M N BUREAU CO LN, Lee, IL
Built 1980 Load: 32.4 t ADT: 150
HARMON ROAD
FairOver: GREEN RIVER TRIB
3 MI N COUNTY LINE, Lee, IL
Built 1983 Load: 32.4 t ADT: 150
RYAN ROAD - TR 24
FairOver: WINNEBAGO DITCH
4.6 MI N BUREAU CO, Lee, IL
Built 1990 Load: 32.4 t ADT: 25
EAKLE ROAD
FairOver: MAIN DITCH
1.3 MI S VAN PETTEN, Lee, IL
Built 1982 Load: 32.4 t ADT: 10
RYAN RD
FairOver: MAIN DITCH
2.5 M SW HARMON, Lee, IL
Built 1984 Load: 32.4 t ADT: 25
HOYLE ROAD
FairOver: MAIN DITCH
0.3 MI S OF HICKS RD, Lee, IL
Built 1976 Load: 32.4 t ADT: 10
PERU ROAD
FairOver: MAIN DITCH
0.65 MI N AMBOY RD, Lee, IL
Built 1982 Load: 32.4 t ADT: 125
DUTCH ROAD
FairOver: TRIB 5-MILE BRANCH
0.2 MI N STERLING RD, Lee, IL
Built 1984 Load: 32.4 t ADT: 25
BRIAR KNOLL ROAD
FairOver: DRAINAGE DITCH
0.05 M W MORGAN RD, Lee, IL
Built 1983 Load: 32.4 t ADT: 50
ST. MARY'S RD-TR29
FairOver: STREAM
MAY-SUBLETTE TWP LN, Lee, IL
Built 1991 Load: 32.4 t ADT: 25
WALKER RD
FairOver: 3-MILE BRANCH
0.4 M W HARMON RD, Lee, IL
Built 1986 Load: 32.4 t ADT: 10
TOWN LINE RD
FairOver: DRAINAGE DITCH
0.1 MI N MCG1RR RD, Lee, IL
Built 1981 Load: 32.4 t ADT: 25
TOWN HALL RD
FairOver: GREEN RIVER TRIB
1.0 MI S REYNOLDS RD, Lee, IL
Built 1981 Load: 32.4 t ADT: 25
BURKETT RD
FairOver: BRANCH OF 3 MI CREEK
0.15 MI N IL RTE 52, Lee, IL
Built 1980 Load: 32.4 t ADT: 200
SUBLETTE RD
FairOver: BR OF GREEN RIVER
0.4 M W LAMOILLE RD, Lee, IL
Built 1984 Load: 32.4 t ADT: 200
MELUGINS GROVE RD
FairOver: WILLOW CREEK
0.5 MI N OF US 30, Lee, IL
Built 1980 Load: 32.4 t ADT: 10
HERMAN ROAD
FairOver: TRIB OF GREEN RIVER
0.5 M E BROOKLYN RD, Lee, IL
Built 1982 Load: 32.4 t ADT: 10
CARNAHAN RD - TR 2
FairOver: BR OF GREEN RIV
0.4 M S BUTLER HILL, Lee, IL
Built 1987 Load: 32.4 t ADT: 50
BUTLER HILL ROAD
FairOver: TRIB. OF GREEN RIVER
0.3 MI W BROOKLYN RD, Lee, IL
Built 1994 Load: 32.4 t ADT: 75
SNYDER RD
FairOver: UNNAMED STREAM
0.1 M W GERMAN RD, Lee, IL
Built 1984 Load: 32.4 t ADT: 50
GERMAN ROAD - TR26
FairOver: STREAM
.2 MI. S. OF US 30, Lee, IL
Built 1990 Load: 32.4 t ADT: 75
OLD RT 66 FAS 298
FairOver: DITCH
2.02MI N OF ILL 23, Livingston, IL
Built 1954 Load: 32.4 t ADT: 2,350
CO HWY 14 FAS 1354
FairOver: CREEK
1 MI SE OF MISSAL, Livingston, IL
Built 1926 Load: 32.4 t ADT: 550
TR 75
FairOver: DIAMOND CREEK
215 E, 2400 N, Livingston, IL
Built 1965 Load: 32.4 t ADT: 25
TR 107
FairOver: SCATTERING POINT CR
765E,2100N, Livingston, IL
Built 1950 Load: 32.4 t ADT: 50
TR 118
FairOver: BAKER RUN
2380 N, 1400 E, Livingston, IL
Built 1948 Load: 32.4 t ADT: 50
Showing 8,601-8,650 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.