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
MUD CREEK TR 308
Structurally DeficientOver: MUD CREEK
1.5 MI N ILL 13, St. Clair, IL
Built 1969 Load: 31.1 t ADT: 750
LASALLE STREET
Structurally DeficientOver: TROLLEY CAR TUNNEL
S. OF CHICAGO RIVER, Cook, IL
Built 1911 Load: 31.4 t ADT: 4,750
TR-282
Structurally DeficientOver: Covel Creek
E 16TH N 2275, LaSalle, IL
Built 1966 Load: 31.4 t ADT: 100
CO RD 15
Structurally DeficientOver: WALBRIDGE CREEK
E 24TH,N 2885, LaSalle, IL
Built 1971 Load: 31.4 t ADT: 4,700
FAP-332 (ILL-1)
Structurally DeficientOver: EMBARRAS RV OVERFLOW
.5 MI N US-50, Lawrence, IL
Built 1923 Load: 31.4 t ADT: 5,400
TR 258
Structurally DeficientOver: DRAIN DITCH
4 MI NE BILLET, Lawrence, IL
Built 2002 Load: 31.4 t ADT: 150
HEMSTOCK ROAD
Structurally DeficientOver: UNNAMED STREAM
2.5 MI N ROCHELLE, Ogle, IL
Built 1980 Load: 31.4 t ADT: 400
OTTEN RD/ TR 107
Structurally DeficientOver: HICKMAN CREEK
0.2 MI E WAGNER RD, St. Clair, IL
Built 1978 Load: 31.4 t ADT: 250
I- 80 EB
Structurally DeficientOver: DUPAGE RIVER
0.8 M W OF I-55, Will, IL
Built 1960 Load: 31.4 t ADT: 25,150
CUNNINGHAM RD
Structurally DeficientOver: CN RR
0.5 MI E PIERPONT, Winnebago, IL
Built 1955 Load: 31.4 t ADT: 2,650
HUMBOLDT DR
Structurally DeficientOver: HUMBOLDT PK LAGOON
1400 N. & 3000 W., Cook, IL
Built 1953 Load: 31.8 t ADT: 13,700
FAS-96 (Somonauk R
Structurally DeficientOver: Buck Br Somonauk Cr
110N , 1460E, DeKalb, IL
Built 1996 Load: 31.8 t ADT: 3,250
TR-14 Nettle Crk R
Structurally DeficientOver: Trib To Nettle Crk
0.21 MI S OF TR 13, Grundy, IL
Built 1977 Load: 31.8 t ADT: 100
FAS-1824 (CH-27)
Structurally DeficientOver: SIXMILE CREEK
1 MI W OF US 51, Perry, IL
Built 1900 Load: 31.8 t ADT: 1,000
FAU 7030(TR 333)
Structurally DeficientOver: GRAPE CREEK
E EDGE BELGIUM, Vermilion, IL
Built 1985 Load: 31.8 t ADT: 425
TR-147 (EAST ELM R
Structurally DeficientOver: OTTER CREEK
6 MI E CHADWICK, Carroll, IL
Built 1975 Load: 32.1 t ADT: 50
TR 189
Structurally DeficientOver: CLEAR CREEK
3.5 MI S SICILY, Christian, IL
Built 1954 Load: 32.1 t ADT: 50
TR 172 JUGTOWN RD
Structurally DeficientOver: CLAYPOOL DRAIN DITCH
.11 MI S WHITETIE RD, Grundy, IL
Built 1986 Load: 32.1 t ADT: 900
HIGGINS RD TR-130
Structurally DeficientOver: JOHNNY RUN
.41 MI N SPRING RD, Grundy, IL
Built 1977 Load: 32.1 t ADT: 125
IL 111
Structurally DeficientOver: MCT trail,UPRR,abandon R
0.25 mi N of IL 162, Madison, IL
Built 1940 Load: 32.1 t ADT: 8,850
TODD SCHOOL ROAD
Structurally DeficientOver: COPPERAS CREEK
E 1/2-5-TIMBER TWP, Peoria, IL
Built 2003 Load: 32.1 t ADT: 225
FREEBURG TWP.TR 20
Structurally DeficientOver: DRUM HILL BR
1.0 MI W ILL. 4, St. Clair, IL
Built 1966 Load: 32.1 t ADT: 75
FAS 1225/CH 12
Structurally DeficientOver: E BUREAU CREEK
2 MI W OF ARLINGTON, Bureau, IL
Built 1982 Load: 32.4 t ADT: 200
BROOKVILLE RD
Structurally DeficientOver: ELKHORN CREEK
8.0 MI NW OF POLO, Carroll, IL
Built 1985 Load: 32.4 t ADT: 50
EAGLE POINT RD
Structurally DeficientOver: ELKHORN CREEK
2MI NE MILLEDGEVILLE, Carroll, IL
Built 1996 Load: 32.4 t ADT: 125
FAU 7155(DUNCAN RD
Structurally DeficientOver: COPPER SLOUGH
DUNCAN S OF SPRNGFLD, Champaign, IL
Built 1976 Load: 32.4 t ADT: 7,550
TR 36 A
Structurally DeficientOver: CLEAR CREEK
3.5 MI NW PALMER, Christian, IL
Built 1900 Load: 32.4 t ADT: 20
CH 11
Structurally DeficientOver: LITTLE WABASH RIVER
2.3 MI W OF ETNA, Coles, IL
Built 1978 Load: 32.4 t ADT: 450
TR 74B
Structurally DeficientOver: RILEY CREEK
1.25 MI NE MATTOON, Coles, IL
Built 1981 Load: 32.4 t ADT: 700
IL 43 SB HARLEM A
Structurally DeficientOver: SAN & SHIP CANAL
0.1 M N I-55, Cook, IL
Built 1966 Load: 32.4 t ADT: 35,500
BALMORAL AVENUE
Structurally DeficientOver: CANADIAN CENTRAL RAILROA
0.25 MI W OF I-294, Cook, IL
Built 2000 Load: 32.4 t ADT: 3,000
TR 227
Structurally DeficientOver: SHAW CREEK
SW-11-T6NR1E, Fulton, IL
Built 1996 Load: 32.4 t ADT: 10
BOTTOM RD - TR 288
Structurally DeficientOver: COAL CREEK
NW-19-T8NR3E, Fulton, IL
Built 1996 Load: 32.4 t ADT: 25
GARDNER RD/FAS 292
Structurally DeficientOver: JOHNNY RUN
.36 MI W-BUFFALO RD, Grundy, IL
Built 1992 Load: 32.4 t ADT: 800
FAP 685, ILL 9
Structurally DeficientOver: MISSISSIPPI RIVER
FORT MADISON IOWA, Hancock, IL
Built 1927 Load: 32.4 t ADT: 2,500
KIMBALL-ST
Structurally DeficientOver: FOX RIVER
DOWNTOWN ELGIN, Kane, IL
Built 1917 Load: 32.4 t ADT: 16,900
CH 37
Structurally DeficientOver: IROQUOIS R
5.3 MI W ST. ANNE, Kankakee, IL
Built 1979 Load: 32.4 t ADT: 1,150
MILLER RD
Structurally DeficientOver: LITTLE ROCK CK
BY CREEK RD, Kendall, IL
Built 1978 Load: 32.4 t ADT: 300
US 150
Structurally DeficientOver: SPOON RIVER
4 MI W OF ILL 180, Knox, IL
Built 1930 Load: 32.4 t ADT: 1,100
OLD US 51 (SBI 2A)
Structurally DeficientOver: LOST CREEK
1.75 MI N SANDOVAL, Marion, IL
Built 1920 Load: 32.4 t ADT: 175
FAS 222-CH 22
Structurally DeficientOver: TOMS CREEK
SW-31-T13NR1W, Mercer, IL
Built 1976 Load: 32.4 t ADT: 425
BISMARCK RD(FAS497
Structurally DeficientOver: W BR NFORK VERM RIV
2 MI W OF BISMARCK, Vermilion, IL
Built 1975 Load: 32.4 t ADT: 1,000
FAS 579
Structurally DeficientOver: PRAIRIE CREEK
1 MI S HAGENER, Cass, IL
Built 1960 Load: 32.7 t ADT: 1,750
TR 134 (TH-S53)
Structurally DeficientOver: JUDD CREEK
T30N-R1E-3PM SEC 20, Marshall, IL
Built 1974 Load: 32.7 t ADT: 50
DEARBORN ST
Structurally DeficientOver: MAIN BR CHICAGO RIV
100 W & 307 N, Cook, IL
Built 1963 Load: 33.0 t ADT: 5,600
TR 1
Structurally DeficientOver: FOUNTAIN CR
1.5 MI N EAST LYNN, Iroquois, IL
Built 1958 Load: 33.0 t ADT: 50
MILL RD
Structurally DeficientOver: PISCASAW CREEK
1.5 MI S OF CAPRON, Boone, IL
Built 1975 Load: 33.4 t ADT: 125
FAS-176 (Perry Rd)
Structurally DeficientOver: Br of Battle Creek
1500N 1540E, DeKalb, IL
Built 1990 Load: 33.4 t ADT: 2,150
TR-20A
Structurally DeficientOver: SPRING CREEK
E 1ST N 3660, LaSalle, IL
Built 1977 Load: 33.4 t ADT: 100
FAS-2055 (CH-28)
Structurally DeficientOver: Ida Creek
2390 N, 1050 E, Livingston, IL
Built 1935 Load: 33.4 t ADT: 200
Showing 27,601-27,650 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |