Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near median Poor share
Illinois bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
Data updated May 2026
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges whose lowest applicable component is rated 0-4
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 - Poor-condition share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.
RI
Rhode Island
7.69% top marginal rate
NE
Nebraska
7.73% top marginal rate
IL
Illinois
7.88% top marginal rate
MA
Massachusetts
7.96% top marginal rate
MO
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
PoorOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
PoorOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
PoorOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
TR 259
FairOver: TOMS CREEK
NW-31-T13NR1W, Mercer, IL
Built 1988 Load: 32.4 t ADT: 50
TR 1
FairOver: DUCK CREEK
SE-32-T13NR3W, Mercer, IL
Built 1984 Load: 32.4 t ADT: 20
TR 212
FairOver: POPE CREEK
E.CTR-33-T14NR2W, Mercer, IL
Built 1988 Load: 32.4 t ADT: 25
TR 128
FairOver: EDWARDS RIVER
W.CTR-7-T14NR3W, Mercer, IL
Built 1986 Load: 32.4 t ADT: 175
TR 165
FairOver: STURGEON BAY
NW-19-T14NR5W, Mercer, IL
Built 1980 Load: 32.4 t ADT: 50
TR 198
FairOver: CAMP CREEK
SW-19-T15NR2W, Mercer, IL
Built 1975 Load: 32.4 t ADT: 50
TR 114
FairOver: CAMP CREEK
SE-23-T15NR4W, Mercer, IL
Built 1981 Load: 32.4 t ADT: 75
TR 77
FairOver: CAMP CREEK
E.CTR-27-T15NR4W, Mercer, IL
Built 1986 Load: 32.4 t ADT: 25
TR 20
FairOver: KEATING CREEK
SW-8-T15NR5W, Mercer, IL
Built 1983 Load: 32.4 t ADT: 25
CH 12
FairOver: DENNIS HOLLOW CREEK
1 ME VALMEYER SEC 2, Monroe, IL
Built 1982 Load: 32.4 t ADT: 775
FAS 1857
FairOver: MAEYSTOWN CREEK
1.5 M SW O MAEYSTOWN, Monroe, IL
Built 1980 Load: 32.4 t ADT: 325
HH ROAD TR 47
FairOver: FOUNTAIN CREEK
5 M NW OF WATERLO 6, Monroe, IL
Built 1981 Load: 32.4 t ADT: 475
GALL RD FAU 9345
FairOver: TRIBUTARY TO CARR CK
COLUMBIA, Monroe, IL
Built 1982 Load: 32.4 t ADT: 1,550
TR 145 S. FORK RD
FairOver: HORSE CR
SEC 12 RD DIST 4, Monroe, IL
Built 1984 Load: 32.4 t ADT: 75
MARTINI RDTR59
FairOver: KOPP CREEK
SECTION 21RD DIS 2, Monroe, IL
Built 1985 Load: 32.4 t ADT: 200
TR 96 "M" ROAD
FairOver: RICHLAND CREEK
SEC 15 RD.DIST. 1, Monroe, IL
Built 1987 Load: 32.4 t ADT: 175
TR133 BRANDT RD
FairOver: MAEYSTOWN CR
SEC 6 ROAD DIST 8, Monroe, IL
Built 1986 Load: 32.4 t ADT: 175
FAS 1857
FairOver: ONE MILE RACE CREEK
4M SE. FULTS ON CH3, Monroe, IL
Built 1988 Load: 32.4 t ADT: 250
TR 145 S. FORK RD
FairOver: SOUTH FORK
SEC 15 RD DIST 4, Monroe, IL
Built 1988 Load: 32.4 t ADT: 75
TR 21 STEPPIG RD.
FairOver: LITTLE CARR CK.
3 MI SW COLUMBIA #5, Monroe, IL
Built 1988 Load: 32.4 t ADT: 125
TR 170
FairOver: DRY FORK CR.
1.5 MI. E. RENAULT, Monroe, IL
Built 1990 Load: 32.4 t ADT: 50
TR 141 FULTS RD
FairOver: FULTS CREEK
SEC 22 RD DIST 8, Monroe, IL
Built 1992 Load: 32.4 t ADT: 75
GILMORE LK RD/ TR
FairOver: TRIB GERHARDT CREEK
ROAD DISTRICT 2, Monroe, IL
Built 1992 Load: 32.4 t ADT: 250
TR 7
FairOver: CARR CREEK
ROAD DIST 5, Monroe, IL
Built 1992 Load: 32.4 t ADT: 75
TR 56B / D ROAD
FairOver: FOUNTAIN CREEK
RD DIST #6, Monroe, IL
Built 1995 Load: 32.4 t ADT: 200
FAS 1857
FairOver: LAKE MILDRED OUTLET
5.5 MI. SE FULTS CH3, Monroe, IL
Built 1996 Load: 32.4 t ADT: 250
GALL RD./ FAU 9345
FairOver: TRIB CARR CK
COLUMBIA, Monroe, IL
Built 1992 Load: 32.4 t ADT: 1,550
FAS 1857
FairOver: TRIB. TO MOREDOCK LK
VALMEYER, Monroe, IL
Built 1998 Load: 32.4 t ADT: 650
MS 5900A RAMSEY RD
FairOver: PALMER CR
1.5 WEST OF COL, Monroe, IL
Built 1986 Load: 32.4 t ADT: 350
FAI 55 W FR
FairOver: MACOUPIN CREEK
.75 MI S OF CH 17, Montgomery, IL
Built 1949 Load: 32.4 t ADT: 450
NOKOMIS BLACKTOP
FairOver: W FORK BLUE GRASS CR
.3M E IL 127, Montgomery, IL
Built 1938 Load: 32.4 t ADT: 900
TR 450
FairOver: STREAM
6.0 MI E NOKOMIS, Montgomery, IL
Built 1976 Load: 32.4 t ADT: 75
TR 121
FairOver: MDL FK SHOAL CK
7.0 MI W COALTON, Montgomery, IL
Built 1976 Load: 32.4 t ADT: 50
TR 371
FairOver: BEARCAT CREEK
4.5 MI W COFFEEN, Montgomery, IL
Built 1977 Load: 32.4 t ADT: 175
TR 271A
FairOver: TRIB W FK SHOAL CR
2.3 SE LITCHFIELD, Montgomery, IL
Built 1978 Load: 32.4 t ADT: 200
TR 219B
FairOver: LITTLE CREEK
1 MI W IRVING, Montgomery, IL
Built 1982 Load: 32.4 t ADT: 25
FAS 724
FairOver: EAST FORK SHOAL CR.
2 MI S WITT, Montgomery, IL
Built 1981 Load: 32.4 t ADT: 200
TR 52
FairOver: MACOUPIN CREEK
3.1 MI N WAGGONER, Montgomery, IL
Built 1978 Load: 32.4 t ADT: 100
TR 211
FairOver: E. FORK SHOAL CREEK
3 MI S WITT, Montgomery, IL
Built 1980 Load: 32.4 t ADT: 25
TR 185
FairOver: CAESAR CREEK
6.5 MI SE WITT, Montgomery, IL
Built 1978 Load: 32.4 t ADT: 125
TR 158
FairOver: STREAM
3 MI W HILLSBORO, Montgomery, IL
Built 1978 Load: 32.4 t ADT: 75
TR 125
FairOver: W FORK SHOAL CREEK
1.4 MI S RAYMOND, Montgomery, IL
Built 1978 Load: 32.4 t ADT: 125
TR 351
FairOver: TRIB. E FORK SHOAL C
1.5 MI NE COFFEEN, Montgomery, IL
Built 1980 Load: 32.4 t ADT: 50
TR 335
FairOver: DRY FORK
1.5 MI SW FILLMORE, Montgomery, IL
Built 1982 Load: 32.4 t ADT: 50
TR 45
FairOver: MACOUPIN CREEK
3 MI SW FARMERSVILLE, Montgomery, IL
Built 1981 Load: 32.4 t ADT: 75
TR 124
FairOver: W FORK SHOAL CREEK
0.5 MI N RAYMOND, Montgomery, IL
Built 1981 Load: 32.4 t ADT: 75
TR 467
FairOver: GROVE BRANCH
3 MI S WALSHVILLE, Montgomery, IL
Built 1982 Load: 32.4 t ADT: 75
TR 274
FairOver: MIDDLE FK SHOAL CR
7 MI W NOKOMIS, Montgomery, IL
Built 1981 Load: 32.4 t ADT: 75
TR 103
FairOver: RAMSEY CREEK
3 MI SE OHLMAN, Montgomery, IL
Built 1982 Load: 32.4 t ADT: 75
TR 94
FairOver: THREE MILE BRANCH
3.5 MI SW RAYMOND, Montgomery, IL
Built 1986 Load: 32.4 t ADT: 125
Showing 9,001-9,050 of 27,743 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.