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
TR 167
FairOver: HARRIS BR. SUGAR CR.
1 S FULTON CO LINE, Schuyler, IL
Built 1978 Load: 33.7 t ADT: 50
EMERALD MOUND TR 2
FairOver: LITTLE SILVER CR
1.25 MI NE ILL 4, St. Clair, IL
Built 1964 Load: 33.7 t ADT: 25
FAP-328ALT (US-45W
FairOver: STREAM
FAIRFIELD W.C.L., Wayne, IL
Built 1956 Load: 33.7 t ADT: 3,200
US 30
FairOver: I&M FEEDER CANAL
0.3 MI E. OF IL 40, Whiteside, IL
Built 1990 Load: 33.7 t ADT: 7,350
COVELL ROAD
FairOver: ROCK CREEK
5 MI NE OF MORRISON, Whiteside, IL
Built 1989 Load: 33.7 t ADT: 35
HIGH ROAD
FairOver: MINK CREEK
0.1 N. ILL. 171, Will, IL
Built 1967 Load: 33.7 t ADT: 1,450
BREEN RD
FairOver: JACKSON CRK BRANCH
1.5MI EAST ILL 53, Will, IL
Built 1923 Load: 33.7 t ADT: 200
WASHINGTON STREET
FairOver: HICKORY CREEK
0.5 MI E OF US RTE 6, Will, IL
Built 1929 Load: 33.7 t ADT: 3,200
FAS 907 (CH 9)(UNM
FairOver: BIG MUDDY RIVER
1 MI S OF HURST, Williamson, IL
Built 1937 Load: 33.7 t ADT: 5,550
TR 41
FairOver: CROW CREEK
2 MI W OF US 51, Woodford, IL
Built 1988 Load: 33.7 t ADT: 150
FAS 2943
FairOver: AMBEER CREEK
3.5 M.W. OF TAMMS, Alexander, IL
Built 1977 Load: 34.0 t ADT: 125
US 6 FAS 1247
FairOver: KING CREEK
W. EDGE OF MINERAL, Bureau, IL
Built 1955 Load: 34.0 t ADT: 1,050
ILL 100
FairOver: KAMPSVILLE CREEK
KAMPSVILLE, Calhoun, IL
Built 1977 Load: 34.0 t ADT: 1,050
US 52 & IL 64
FairOver: BR. OF SRADDLE CREEK
3.1 MI. E. OF LANARK, Carroll, IL
Built 2000 Load: 34.0 t ADT: 2,500
TEMPEL RD
FairOver: N BRANCH LOST CREEK
3 MI NE SHANNON, Carroll, IL
Built 1978 Load: 34.0 t ADT: 50
I-72(EB)
FairOver: KASKASKIA RIVER
NE OF BONDVILLE, Champaign, IL
Built 1968 Load: 34.0 t ADT: 8,650
I-72(WB)
FairOver: KASKASKIA RIVER
NE OF BONDVILLE, Champaign, IL
Built 1968 Load: 34.0 t ADT: 8,650
FAS-533 (CH-20)
FairOver: STREAM
2.4 MI W LEVERETT, Champaign, IL
Built 1945 Load: 34.0 t ADT: 1,000
CH 3(FAS 692)
FairOver: PARTRIDGE CREEK
1.5 MI N DARWIN, Clark, IL
Built 1909 Load: 34.0 t ADT: 100
TR 388
FairOver: E FK WET WEATHER CR
3.5 MI NE SAILOR SPR, Clay, IL
Built 1923 Load: 34.0 t ADT: 50
TR-106
FairOver: BUCK CREEK
2.5 MI E OSKALOOSA, Clay, IL
Built 1992 Load: 34.0 t ADT: 75
IND AVE & STATE ST
FairOver: LITTLE CAL RIV
1 M S ILL 83 P24, Cook, IL
Built 1928 Load: 34.0 t ADT: 12,300
I355 NB & SB
FairOver: DESPLAINES RIVER VAL
.5M S OF BLUFF RD, Cook, IL
Built 2007 Load: 34.0 t ADT: 78,300
LAKE COOK RD
FairOver: SKOKIE RIVER
0.2 M E US 41 P14, Cook, IL
Built 1932 Load: 34.0 t ADT: 13,900
137TH ST.
FairOver: MIDLOTHIAN CREEK
0.09M.E.OF KEDZIE AV, Cook, IL
Built 1980 Load: 34.0 t ADT: 150
ARCHER AVE
FairOver: S FK S BR CHI RIVER
3100 S 1550 W P5C, Cook, IL
Built 1963 Load: 34.0 t ADT: 24,100
DIVERSEY AVE
FairOver: N BR CHICAGO RIVER
2800 N & 2200 W, Cook, IL
Built 1968 Load: 34.0 t ADT: 17,400
I-90 SKYWAY
FairOver: CALUMET RIVER
VIAD, CALUMET RV, Cook, IL
Built 1958 Load: 34.0 t ADT: 28,700
FAS 695\CH 2
FairOver: MUDDY CREEK
1.5 MI W ANNAPOLIS, Crawford, IL
Built 2004 Load: 34.0 t ADT: 375
TR 134
FairOver: COON CREEK
1 MI E OF CLINTON, De Witt, IL
Built 1972 Load: 34.0 t ADT: 400
YACKLEY AVE
FairOver: BN RR
0.3 MI S OF US 34, DuPage, IL
Built 1967 Load: 34.0 t ADT: 10,150
EOLA RD
FairOver: WAUBONSIE CREEK
0.5 MI N OF RT 34, DuPage, IL
Built 1980 Load: 34.0 t ADT: 27,300
FAP-332 (ILL-1)
FairOver: MUD CREEK
1.6 MI S WABASH C L, Edwards, IL
Built 1996 Load: 34.0 t ADT: 2,100
FAI-70 EB
FairOver: HURRICANE CREEK
2.9 MI E BOND CO LN, Fayette, IL
Built 1965 Load: 34.0 t ADT: 12,900
FAI-70 WB
FairOver: HURRICANE CREEK
2.9 MI E BOND CO LN, Fayette, IL
Built 1965 Load: 34.0 t ADT: 12,900
FAP-322 (US-51)
FairOver: CASSAR CREEK
1 MI S SHOBONIER, Fayette, IL
Built 1960 Load: 34.0 t ADT: 2,950
TR 60B PELLA
FairOver: PELLA DRAINAGE DITCH
2790N 1600E, Ford, IL
Built 1907 Load: 34.0 t ADT: 25
UNION CHAPELRD-TR5
FairOver: OTTER CREEK
NW-1-T3NR1E, Fulton, IL
Built 1980 Load: 34.0 t ADT: 25
FAS 1273/DuPont Rd
FairOver: ARMSTRONG RUN
0.27 MI E CO LINE, Grundy, IL
Built 2006 Load: 34.0 t ADT: 250
TR-128 TYNAN RD
FairOver: MURRAY SLUICE
.06 MI N GR RIDGE RD, Grundy, IL
Built 1981 Load: 34.0 t ADT: 75
IL 96
FairOver: WAGGONER CREEK
4.2M N US136,HAMILTN, Hancock, IL
Built 1981 Load: 34.0 t ADT: 1,100
FAS 325
FairOver: SUGAR CREEK
.75 MI SW WATSEKA, Iroquois, IL
Built 1974 Load: 34.0 t ADT: 1,300
TR 366
FairOver: TRIB SUGAR CREEK
0.02 MI S CH9, Iroquois, IL
Built 1980 Load: 34.0 t ADT: 75
FAS 746
FairOver: DEARCY CREEK
2.0 M E OF KANE, Jersey, IL
Built 1977 Load: 34.0 t ADT: 250
ILL 102
FairOver: DAVIS CREEK
2.2 MI NW OF US 45, Kankakee, IL
Built 2004 Load: 34.0 t ADT: 6,800
FAS-694
FairOver: THE SLOUGH
1.2 MI S CHAUNCEY, Lawrence, IL
Built 1986 Load: 34.0 t ADT: 650
CH 31
FairOver: FIVE MILE BRANCH
.9 MI E OF SR 26, Lee, IL
Built 1932 Load: 34.0 t ADT: 150
ILL 116
FairOver: ROOKS CREEK
3.87 M W OF I-55, Livingston, IL
Built 1970 Load: 34.0 t ADT: 3,050
TR 18
FairOver: LONG POINT CREEK
2595 N, 400 E, Livingston, IL
Built 1965 Load: 34.0 t ADT: 150
US 51 SB (FAP 710)
FairOver: LAKE DECATUR
IN DECATUR, Macon, IL
Built 1971 Load: 34.0 t ADT: 22,400
Showing 10,501-10,550 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.