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
FAI 280 EB
FairOver: IAIS RR
.1 MI E OF US 67, Rock Island, IL
Built 1968 Load: 42.1 t ADT: 9,850
ILL 29
FairOver: MACKINAW RIVER
N OF GREEN VALLEY, Tazewell, IL
Built 1997 Load: 42.1 t ADT: 2,250
ILL 3 & ILL 146
FairOver: DRAINAGE DITCH
2.3 MI S OF ILL 146, Union, IL
Built 2005 Load: 42.1 t ADT: 4,150
US 67
FairOver: HENDERSON CREEK
2.4 MI S OF ILL 135, Warren, IL
Built 2001 Load: 42.1 t ADT: 2,250
FAP-821 (ILL-15)
FairOver: SKILLET FORK
.4 MI N WAYNE CITY, Wayne, IL
Built 1958 Load: 42.1 t ADT: 3,500
ILL 172
FairOver: HENNEPIN CANAL FEEDR
3.2 MI W JCT ILL 40, Whiteside, IL
Built 1972 Load: 42.1 t ADT: 800
I-39 & US 20 SB
FairOver: UP RR
1.4 MI S OF I-90, Winnebago, IL
Built 1963 Load: 42.1 t ADT: 25,450
I-39 & US 20 N B
FairOver: UP RR
1.4 MI S OF I-90, Winnebago, IL
Built 1963 Load: 42.1 t ADT: 25,450
ILL 26
FairOver: DRY CREEK
8.9 MI S OF ILL 17, Woodford, IL
Built 1991 Load: 42.1 t ADT: 2,350
ILL 104 WB
FairOver: MILL CREEK
2.2MI E I-172/IL 104, Adams, IL
Built 1928 Load: 42.4 t ADT: 6,150
ILL 104 EB
FairOver: MILL CREEK
2.2MI E I-172/IL 104, Adams, IL
Built 1987 Load: 42.4 t ADT: 6,150
ILL 78
FairOver: N BRANCH SAND CREEK
0.1 MI N ARGO FAY RD, Carroll, IL
Built 1989 Load: 42.4 t ADT: 1,550
ARGO FAY ROAD
FairOver: SAND CREEK TRIB.
1 MI W OF ILL 78, Carroll, IL
Built 1985 Load: 42.4 t ADT: 1,450
FAS 512 (CH 15)
FairOver: UP RR
0.5 MI E OF SIDNEY, Champaign, IL
Built 1953 Load: 42.4 t ADT: 1,700
SBI 16
FairOver: RILEY CREEK
3.0 MI W CHARLESTON, Coles, IL
Built 1982 Load: 42.4 t ADT: 3,350
I- 57 NB
FairOver: 143RD ST & RRS
6.5 M SW ILL 1, Cook, IL
Built 1967 Load: 42.4 t ADT: 54,400
I- 57 SB
FairOver: 143RD ST & RRS
6.5 M SW IL 1, Cook, IL
Built 1967 Load: 42.4 t ADT: 54,400
WESTERN AVE
FairOver: THORN CREEK
0.15 M S SAUK TR P, Cook, IL
Built 1982 Load: 42.4 t ADT: 14,600
IL 58 (GOLF RD)
FairOver: POPLAR CREEK
0.5 W BARRINGTON RD, Cook, IL
Built 2002 Load: 42.4 t ADT: 16,400
FAP-332 (ILL-1)
FairOver: RACCOON CREEK
.7 MI S CLARK CO LN, Crawford, IL
Built 1982 Load: 42.4 t ADT: 2,800
TR-45
FairOver: HUTSON CREEK
4 MI W HUTSONVILLE, Crawford, IL
Built 1978 Load: 42.4 t ADT: 50
US 51 (NB)(FAP 322
FairOver: TEN MILE CREEK
.25 MI N OF IL 10, De Witt, IL
Built 1985 Load: 42.4 t ADT: 7,750
US 51 (SB)(FAP 322
FairOver: TEN MILE CREEK
.25 MI N OF IL 10, De Witt, IL
Built 1985 Load: 42.4 t ADT: 7,750
IL 64 FAP 17
FairOver: S BR KISHWAUKEE RIV.
1.5 MI W JCT IL 23, DeKalb, IL
Built 1940 Load: 42.4 t ADT: 7,650
I-88 EB
FairOver: C&NW RR
SOUTH OF DEKALB, DeKalb, IL
Built 1974 Load: 42.4 t ADT: 12,000
I-88 WB
FairOver: C&NW RR
SOUTH OF DEKALB, DeKalb, IL
Built 1974 Load: 42.4 t ADT: 12,000
US 45(FAS 1671)
FairOver: SCATTERING FORK
0.75 MI N OF US 36, Douglas, IL
Built 1924 Load: 42.4 t ADT: 2,500
IL 49(FAP 836)
FairOver: EAST DONICA CREEK
3.5 MI N OF KANSAS, Edgar, IL
Built 1984 Load: 42.4 t ADT: 675
FAP-322(US-51/US-4
FairOver: KASKASKIA RIVER
ECL VANDALIA, Fayette, IL
Built 1962 Load: 42.4 t ADT: 6,650
FAP-322 (US-51)
FairOver: BEAR CREEK
1 MI N VANDALIA, Fayette, IL
Built 1990 Load: 42.4 t ADT: 4,500
I 57 SB
FairOver: MARCUM BRANCH
3 MI N BENTON, Franklin, IL
Built 1962 Load: 42.4 t ADT: 17,250
I 57 NB
FairOver: MARCUM BRANCH
3 MI N BENTON, Franklin, IL
Built 1962 Load: 42.4 t ADT: 17,250
ILL 97
FairOver: COAL CREEK
2 MI N OF FAIRVIEW, Fulton, IL
Built 1995 Load: 42.4 t ADT: 1,300
T.R. 103 /OMalley
FairOver: HOG RUN
0.1 mi. E.Kingman Rd, Grundy, IL
Built 2016 Load: 42.4 t ADT: 175
FAP-849 (ILL-142)
FairOver: MIDDLE CREEK
6.5 MI SE JEFF CO LN, Hamilton, IL
Built 1929 Load: 42.4 t ADT: 2,700
ILL 94
FairOver: HENDERSON CREEK
1.25 MI S BALD BLUFF, Henderson, IL
Built 1991 Load: 42.4 t ADT: 275
FAI 80 SB
FairOver: MINERAL CREEK
0.7 MI N JCT US 6, Henry, IL
Built 1965 Load: 42.4 t ADT: 10,800
FAU5789 - US 6
FairOver: MOSQUITO CREEK
1 MI. E. COAL VALLEY, Henry, IL
Built 1991 Load: 42.4 t ADT: 4,550
FAS 2709 ST MARIE
FairOver: FOX RIVER
.5 MI E ILL 130, Jasper, IL
Built 1985 Load: 42.4 t ADT: 900
FABYAN PARKWAY
FairOver: MILL CREEK
.1M W KANENVILLE RD, Kane, IL
Built 2008 Load: 42.4 t ADT: 10,250
WATERFORD DR
FairOver: WAUBONSIE CREEK
.3M N OF US34, Kane, IL
Built 1995 Load: 42.4 t ADT: 5,800
FAP840-US45/52
FairOver: GARR CREEK
1MI N OF I-57, Kankakee, IL
Built 1997 Load: 42.4 t ADT: 10,800
CH 25
FairOver: REDDICK RUN
REDDICK, Kankakee, IL
Built 1956 Load: 42.4 t ADT: 300
US 41
FairOver: DES PLAINES RIVER
0.7 M S OF IL 21, Lake, IL
Built 1936 Load: 42.4 t ADT: 21,100
IL 83 NB
FairOver: INDIAN CREEK
2.0 M N OF IL 22, Lake, IL
Built 1994 Load: 42.4 t ADT: 27,900
IL 83 SB
FairOver: INDIAN CREEK
2.0 M N OF IL 22, Lake, IL
Built 1994 Load: 42.4 t ADT: 27,900
I-39/US 51 SB
FairOver: Norfolk & Southern RR
1.48 MI N OF ILL 18, LaSalle, IL
Built 1988 Load: 42.4 t ADT: 9,700
I-39/US 51 NB
FairOver: Norfolk & Southern RR
1.48 MI N OF ILL 18, LaSalle, IL
Built 1988 Load: 42.4 t ADT: 9,700
ILL 116 EB
FairOver: VERMILLION RIVER
0.55 MI S OF ILL 23, Livingston, IL
Built 1954 Load: 42.4 t ADT: 7,700
ILL 116 WB
FairOver: VERMILLION RIVER
0.55 MI S OF ILL 23, Livingston, IL
Built 1947 Load: 42.4 t ADT: 7,700
Showing 12,451-12,500 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.