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
CROSBY ROAD
FairOver: TRIB. ROCK CREEK
.18 MI N OF RICK RD, Whiteside, IL
Built 2003 Load: 32.4 t ADT: 25
CROSBY RD
FairOver: TRIB ROCK CREEK
5 MI N. OF MORRISON, Whiteside, IL
Built 2009 Load: 32.4 t ADT: 25
HILL RD
FairOver: ROCK CREEK
3 MI NE ERIE, Whiteside, IL
Built 1982 Load: 32.4 t ADT: 25
ROCK ROAD
FairOver: BR OF ROCK CREEK
5 M SW OF MORRISON, Whiteside, IL
Built 1985 Load: 32.4 t ADT: 50
WILMOT ROAD
FairOver: LYNN CREEK
5 MI SW OF MORRISON, Whiteside, IL
Built 1987 Load: 32.4 t ADT: 50
SAND RD.
FairOver: CATTAIL CREEK
2 MI SE OF FULTON, Whiteside, IL
Built 1988 Load: 32.4 t ADT: 25
ACKER RD
FairOver: BNSF RR
3 MI E OF FULTON, Whiteside, IL
Built 1997 Load: 32.4 t ADT: 150
PALMER RD
FairOver: CEDAR CREEK
.56 MI W ELSTON RD, Whiteside, IL
Built 2008 Load: 32.4 t ADT: 75
CAPP ROAD
FairOver: SPRING CREEK
6 MI NW STERLING, Whiteside, IL
Built 1979 Load: 32.4 t ADT: 25
QUINN RD
FairOver: SPRING CREEK
5 MI NW OF STERLING, Whiteside, IL
Built 1980 Load: 32.4 t ADT: 50
YORKTOWN ROAD
FairOver: BRANCH OF ROCK CREEK
6 MI NE OF MORRISON, Whiteside, IL
Built 1983 Load: 32.4 t ADT: 50
BLUE GOOSE RD
FairOver: BRANCH OF ROCK CREEK
7 MI NE OF MORRISON, Whiteside, IL
Built 1986 Load: 32.4 t ADT: 50
MANTON ROAD
FairOver: BR LITTLE SPRING CRK
9 MI. NE. MORRISON, Whiteside, IL
Built 1998 Load: 32.4 t ADT: 50
CLARK ROAD
FairOver: TRIB. ELKHORN CREEK
2.5 MI NE COLETA, Whiteside, IL
Built 2003 Load: 32.4 t ADT: 100
YORKTOWN RD
FairOver: ROCK CREEK TRIB
6MI NE OF MORRISON, Whiteside, IL
Built 2012 Load: 32.4 t ADT: 50
COUNTY LINE ROAD
FairOver: GREEN RIVER
2.5 MI E DEER GROVE, Whiteside, IL
Built 1978 Load: 32.4 t ADT: 75
FREEPORT ROAD
FairOver: GREEN RIVER
0.5 M E DEER GROVE, Whiteside, IL
Built 1982 Load: 32.4 t ADT: 50
POLO ROAD
FairOver: SUGAR CREEK
3 MI N OF STERLING, Whiteside, IL
Built 1975 Load: 32.4 t ADT: 450
BUELL ROAD
FairOver: SKUNK CREEK
6 MI N OF STERLING, Whiteside, IL
Built 1980 Load: 32.4 t ADT: 75
FREEPORT ROAD
FairOver: BUFFALO CREEK
9 MI N. STERLING, Whiteside, IL
Built 1990 Load: 32.4 t ADT: 75
PENROSE RD
FairOver: SKUNK CREEK
6 MI. N. OF STERLING, Whiteside, IL
Built 1997 Load: 32.4 t ADT: 125
JAMES ROAD
FairOver: BUFFALO CREEK
9 MI N OF STERLING, Whiteside, IL
Built 1998 Load: 32.4 t ADT: 50
BUNKER HILL ROAD
FairOver: FEEDER OF ROCK RIVER
4 MI SE OF MORRISON, Whiteside, IL
Built 1989 Load: 32.4 t ADT: 150
TR-105 Crosby Rd
FairOver: Rock Creek
.5M NW MORRISON, Whiteside, IL
Built 2001 Load: 32.4 t ADT: 650
OAK GROVE AVENUE
FairOver: UNNAMED CREEK
0.3 M S OF ST MARYS, Whiteside, IL
Built 1982 Load: 32.4 t ADT: 950
MATZNICK ROAD
FairOver: COUNTY DITCH NO.1
2 MI. NW TAMPICO, Whiteside, IL
Built 1990 Load: 32.4 t ADT: 125
MASON ROAD
FairOver: BR OF ROCK CREEK
3 MI SW MORRISON, Whiteside, IL
Built 1978 Load: 32.4 t ADT: 50
HENRY ROAD
FairOver: BRANCH OF ROCK CREEK
1 MI. W. OF MORRISON, Whiteside, IL
Built 1989 Load: 32.4 t ADT: 575
COVELL RD
FairOver: OTTER CREEK
8 MI NW OF MORRISON, Whiteside, IL
Built 1980 Load: 32.4 t ADT: 25
BLINK ROAD
FairOver: OTTER CREEK
3 MI N.E. OF FULTON, Whiteside, IL
Built 1991 Load: 32.4 t ADT: 100
CREAMERY RD
FairOver: TRIB TO SPRING BROOK
4 MI NW OF MORRISON, Whiteside, IL
Built 2011 Load: 32.4 t ADT: 50
HANSEL RD MS 0491
FairOver: DRESDEN RUN
.50 MI E MCLINDON RD, Will, IL
Built 1986 Load: 32.4 t ADT: 475
JOHNSON RD
FairOver: E. AUX CREEK
1.5 MI. W OF CH22, Will, IL
Built 1992 Load: 32.4 t ADT: 225
IL 126
FairOver: DU PAGE RIVER
W OF IL 59, Will, IL
Built 1925 Load: 32.4 t ADT: 21,100
IL 7,53
FairOver: ROCK RUN CREEK TRIB
0.72 M N OF IL 7, Will, IL
Built 1984 Load: 32.4 t ADT: 17,200
IL 113
FairOver: CLAY POOL CREEK
0.3 M E 0F I-55, Will, IL
Built 1993 Load: 32.4 t ADT: 1,650
CANTON FARM RD
FairOver: SUNNYLAND DRAIN
1.4 MI E IL 59, Will, IL
Built 1900 Load: 32.4 t ADT: 9,050
WILL CENTER ROAD
FairOver: BLACK WALNUT CREEK
400 SO EAGLE LK RD, Will, IL
Built 1972 Load: 32.4 t ADT: 1,600
BRANDON RD
FairOver: DES PLAINES RIVER
1/4 MI S US 6, Will, IL
Built 1972 Load: 32.4 t ADT: 6,200
FAU-357 (Rowell Rd
FairOver: Jackson Creek
.6 Mi N Manhattan Rd, Will, IL
Built 2017 Load: 32.4 t ADT: 50
WEBER ROAD
FairOver: E BR DUPAGE RIVER
0.2 MI S ROYCE RD., Will, IL
Built 1982 Load: 32.4 t ADT: 24,700
S. Washington Stre
FairOver: W.BR.DUPAGE RIVER
0.2 MI NW Naper Blvd, Will, IL
Built 1984 Load: 32.4 t ADT: 16,200
WILL-CENTER RD, CH
FairOver: S. BR ROCK CREEK
1.8M S OF BEACHER RD, Will, IL
Built 2012 Load: 32.4 t ADT: 1,150
PEOTONE-BEECHER RD
FairOver: BLACK WALNUT CREEK
1.5M.E.OF IL-50, Will, IL
Built 1988 Load: 32.4 t ADT: 2,750
PEOTONE/BEECHER RD
FairOver: S.BR.ROCK CREEK
0.8 M E WILTON RD, Will, IL
Built 1990 Load: 32.4 t ADT: 3,200
CEDAR ROAD
FairOver: N. BR JACKSON CREEK
0.6MI N LARAWAY RD, Will, IL
Built 1992 Load: 32.4 t ADT: 10,900
WILMINGTON-PEOTNE
FairOver: ROCK CREEK
0.5 MI W I-57, Will, IL
Built 1994 Load: 32.4 t ADT: 6,300
CENTER ROAD
FairOver: S.BR. FORKED CREEK
0.1 MI N PEOTONE RD, Will, IL
Built 1994 Load: 32.4 t ADT: 2,850
EXCHANGE ST
FairOver: KLEMME CREEK
0.3 M W STATE LI RD, Will, IL
Built 1996 Load: 32.4 t ADT: 15,600
US 30 (143rd St)
FairOver: WEST NORMAN DRAIN
0.1 M W IL 59, Will, IL
Built 2006 Load: 32.4 t ADT: 10,500
Showing 10,001-10,050 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.