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
LAWRENCE AVE
FairOver: DES PLAINES RIVER
1 M E I-294, Cook, IL
Built 1994 Load: 29.5 t ADT: 18,800
18TH ST
FairOver: S BR CHICAGO RIVER
301 W 18TH ST, Cook, IL
Built 1967 Load: 29.5 t ADT: 5,650
I-90/I-90W to I-29
FairOver: Willow Creek
0.2 M E I294 P9, Cook, IL
Built 1958 Load: 29.5 t ADT: 103,500
LINDEN AVE
FairOver: N SHORE CHANNEL
WILMETTE, Cook, IL
Built 1909 Load: 29.5 t ADT: 2,300
FAI 57 SBL
FairOver: BIG FOUR DITCH
2.37 MI S OF ILL 9, Ford, IL
Built 1968 Load: 29.5 t ADT: 10,550
ILL 14
FairOver: STREAM W HAMILTON CO
4 MI W HAMILTON CO, Franklin, IL
Built 1953 Load: 29.5 t ADT: 1,500
FAS-428 (CH-11)
FairOver: BEAR CREEK
2.5 MI W OF BASCO, Hancock, IL
Built 1952 Load: 29.5 t ADT: 500
TR 331
FairOver: PIGEON CR
1.25 MI E SBI 49, Iroquois, IL
Built 1965 Load: 29.5 t ADT: 50
TR 77
FairOver: PRAIRIE CR
3 MI E. OF ASHKUM, Iroquois, IL
Built 1970 Load: 29.5 t ADT: 50
TR 31
FairOver: BEAVER CR
3 MI E BEAVERVILLE, Iroquois, IL
Built 1972 Load: 29.5 t ADT: 75
FAS 335 CH 10
FairOver: DRAINAGE DITCH
2.5 S 1.6 W CISNA P, Iroquois, IL
Built 1979 Load: 29.5 t ADT: 350
US 51
FairOver: CNIC RR
3 MI N OF DESOTO, Jackson, IL
Built 1983 Load: 29.5 t ADT: 5,150
TR 03
FairOver: ROCK CREEK
6.5 MI NW MANTENO, Kankakee, IL
Built 1966 Load: 29.5 t ADT: 50
TR 125
FairOver: MACON RIV
3 MI. S.E. REDDICK, Kankakee, IL
Built 1964 Load: 29.5 t ADT: 50
TR 209
FairOver: TOMAHAWK CR
N 3550 E 615, LaSalle, IL
Built 1959 Load: 29.5 t ADT: 50
TR 244
FairOver: BUCK CREEK
E 14TH N 3395, LaSalle, IL
Built 1964 Load: 29.5 t ADT: 125
TR 127
FairOver: LITTLE VERMILLION CR
N 4050 E 660, LaSalle, IL
Built 1972 Load: 29.5 t ADT: 25
FAS 1807 (US-50BUS
FairOver: EMBARRAS RIVER
.5MI E LAWRENCEVILLE, Lawrence, IL
Built 1977 Load: 29.5 t ADT: 5,400
CHURCH RD
FairOver: BUREAU CR
2.1 MI N LASALLE CO, Lee, IL
Built 1955 Load: 29.5 t ADT: 100
NAYLOR RD
FairOver: FRANKLIN CREEK
3.2 MI E OF ILL 2, Lee, IL
Built 1955 Load: 29.5 t ADT: 275
TR 22
FairOver: LONG POINT CREEK
2660 N, 450 E, Livingston, IL
Built 1965 Load: 29.5 t ADT: 75
TR 32
FairOver: SCATTERING POINT
1775 N, 600 E, Livingston, IL
Built 1927 Load: 29.5 t ADT: 75
TR 91
FairOver: DEER CK TRIB
3 N 1 MI W BEASON, Logan, IL
Built 1970 Load: 29.5 t ADT: 50
CH 13 SUMMERFIELD
FairOver: LITTLE SILVER CK
4.0 MI S ST JACOB, Madison, IL
Built 1969 Load: 29.5 t ADT: 275
TR 149 (TH-D18)
FairOver: S BRANCH CROW CR
T29N-R1E-3PM SEC 33, Marshall, IL
Built 1969 Load: 29.5 t ADT: 50
TR 140C (TH-S55)
FairOver: S BRANCH CROW CREEK
T29N RIE 3PM SEC 32, Marshall, IL
Built 1973 Load: 29.5 t ADT: 100
RIVER ROAD
FairOver: KISHWAUKEE R OVERFLO
0.8 MI W OF IL 23, McHenry, IL
Built 1928 Load: 29.5 t ADT: 2,250
FAS 1405-CH 12
FairOver: POPE CREEK
SW-35-T14NR1W, Mercer, IL
Built 1971 Load: 29.5 t ADT: 50
ILL 159
FairOver: BLACK CREEK
1.4 M N RED BUD, Monroe, IL
Built 1928 Load: 29.5 t ADT: 4,600
BL72/IL104/MORTON
FairOver: TOWN BROOK
1.2M W IL267-JACKSNV, Morgan, IL
Built 1952 Load: 29.5 t ADT: 16,300
COFFMAN RD
FairOver: MUD CREEK
2.5 MI N OF ADELINE, Ogle, IL
Built 1984 Load: 29.5 t ADT: 850
ADELINE RD
FairOver: S. BR. LEAF RIVER
S. EDGE OF ADELINE, Ogle, IL
Built 1998 Load: 29.5 t ADT: 425
TR 145
FairOver: DRAINAGE DITCH
3 MI NE BEMENT, Piatt, IL
Built 1961 Load: 29.5 t ADT: 50
OLD ILL 92
FairOver: DRAINAGE DITCH
.8 MI W OF I-88, Rock Island, IL
Built 1935 Load: 29.5 t ADT: 650
FAS 583
FairOver: LA MOINE R OVERFLOW
3.9 MI E CAMDEN, Schuyler, IL
Built 2001 Load: 29.5 t ADT: 1,000
CH 4
FairOver: SANDY CREEK
4.5 MI N MANCHESTER, Scott, IL
Built 1972 Load: 29.5 t ADT: 125
TR 0225
FairOver: BIG CREEK
.4MI.W. OF I-57, Union, IL
Built 1983 Load: 29.5 t ADT: 175
TR 206
FairOver: GLENBURN CREEK
2 MI NE OAKWOOD, Vermilion, IL
Built 1983 Load: 29.5 t ADT: 250
FAS-797
FairOver: ELM RIVER
0.2 MI N ENTERPRISE, Wayne, IL
Built 1969 Load: 29.5 t ADT: 1,000
I- 55 NB
FairOver: KANKAKEE RIVER
7.4 M S OF US 6, Will, IL
Built 1935 Load: 29.5 t ADT: 22,100
I 57 SB
FairOver: CACHE RIVER
PULASKI CO LINE, Alexander, IL
Built 1967 Load: 29.8 t ADT: 6,700
TR 16
FairOver: MILLER CREEK
0.2M E. OF THEBES, Alexander, IL
Built 1978 Load: 29.8 t ADT: 175
CH 18,FAS 777
FairOver: EAST BR SHOAL CREEK
5.50M N GREENVILLE, Bond, IL
Built 1976 Load: 29.8 t ADT: 200
TR 145
FairOver: SPOON RIVER
3.5 MI NE ST JOSEPH, Champaign, IL
Built 1973 Load: 29.8 t ADT: 150
TR 220
FairOver: E BRANCH EMBARRAS
4.2 MI S OF PHILO, Champaign, IL
Built 1974 Load: 29.8 t ADT: 75
IL 29
FairOver: LOCUST CREEK TRIB.
.25M SE MILLERSVILLE, Christian, IL
Built 1924 Load: 29.8 t ADT: 3,750
TR 18
FairOver: PRAIRIE FORK
0.5 M W MORRISONVILL, Christian, IL
Built 1964 Load: 29.8 t ADT: 200
US 40(FAS 1707)
FairOver: STREAM
1.4 MI W MARTINSVILL, Clark, IL
Built 1955 Load: 29.8 t ADT: 2,750
FAU 7702(CH 7)
FairOver: DRAINAGE DITCH
S OF MATTOON, Coles, IL
Built 1982 Load: 29.8 t ADT: 5,200
FAS 669(CH 3)
FairOver: HOG BRANCH CREEK
.1 MI N OF OAKLAND, Coles, IL
Built 1960 Load: 29.8 t ADT: 900
Showing 6,601-6,650 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.