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
ILL 26
FairOver: BUFFALO CREEK
JCT ILL 26 & US 52, Ogle, IL
Built 1982 Load: 43.1 t ADT: 1,350
ILL 26/US 52
FairOver: BN RAILROAD
1.0 MI S JCT US 52, Ogle, IL
Built 2012 Load: 43.1 t ADT: 1,900
CO HWY 3
FairOver: REESE CRK OVERFLOW
1 MI E OF US 51, Perry, IL
Built 1987 Load: 43.1 t ADT: 400
I-72
FairOver: STREAM
.5 MI W OF CISCO, Piatt, IL
Built 1976 Load: 43.1 t ADT: 11,400
TR 140
FairOver: POST CK TRIB
3 MI E GRAND CHAIN, Pulaski, IL
Built 1986 Load: 43.1 t ADT: 10
FAP-599 (IL-92)
FairOver: Coal Creek
1.5 MI W ANDALUSIA, Rock Island, IL
Built 1940 Load: 43.1 t ADT: 2,650
IL 29 (NB)
FairOver: SUGAR CREEK
.7M SE I-55 INTCHG, Sangamon, IL
Built 1928 Load: 43.1 t ADT: 16,700
IL 97 / JEFFERSON
FairOver: SPRING CREEK
.08M E IL4/VET. PKWY, Sangamon, IL
Built 1982 Load: 43.1 t ADT: 13,600
IL 29 (WALNUT ST R
FairOver: SANGAMON RIVER
2.6M N IL 4/VETERANS, Sangamon, IL
Built 1997 Load: 43.1 t ADT: 6,950
ILL RT 75
FairOver: ROCK RUN CREEK
1.3 MI E ROCK CITY, Stephenson, IL
Built 2011 Load: 43.1 t ADT: 3,300
FAP 655-VFW Road
FairOver: drainage ditch
1.5 Mi. E. of Ill 29, Tazewell, IL
Built 2014 Load: 43.1 t ADT: 5,300
FAS 1511
FairOver: N FORK VERMILION RIV
2 MI N OF DANVILLE, Vermilion, IL
Built 1998 Load: 43.1 t ADT: 1,750
NB US 67
FairOver: CEDAR CREEK
4 MI N OF ROSEVILLE, Warren, IL
Built 1995 Load: 43.1 t ADT: 4,000
CH 22
FairOver: NORTH CREEK
2 MI WEST HUEGELY, Washington, IL
Built 1916 Load: 43.1 t ADT: 525
US RT 30
FairOver: ELKHORN CREEK
.58 MI W OF COMO RD, Whiteside, IL
Built 1940 Load: 43.1 t ADT: 5,300
IL 84
FairOver: CATTAIL CREEK
0.9 MI S JCT US 30, Whiteside, IL
Built 2008 Load: 43.1 t ADT: 3,950
US 45
FairOver: N BR PRAIRIE CR
4.7 M S OF US 30, Will, IL
Built 1978 Load: 43.1 t ADT: 5,900
IL 50 (GOVERNORS)
FairOver: ROCK CREEK (N XING)
0.3 M S PAULING RD, Will, IL
Built 1995 Load: 43.1 t ADT: 5,700
FAS 943
FairOver: JIM BRANCH
0.1 MI E DISWOOD, Alexander, IL
Built 1993 Load: 43.4 t ADT: 1,100
TISKILWA SPUR
FairOver: BUREAU CREEK
0.3 MI N TISKILWA, Bureau, IL
Built 1933 Load: 43.4 t ADT: 1,100
US 6/34 FAS 1248
FairOver: BIG BUREAU CREEK
1.8 M W Main St Princeton, Bureau, IL
Built 1991 Load: 43.4 t ADT: 3,250
FAS 188A/CH 8
FairOver: POND CREEK
S EDGE OF WYANET, Bureau, IL
Built 1931 Load: 43.4 t ADT: 1,000
ARGO FAY ROAD
FairOver: UNNAMED STREAM
2.5 MI. E. THOMSON, Carroll, IL
Built 1994 Load: 43.4 t ADT: 1,950
DUNCAN RD(FAU 7155
FairOver: PHINNEY BRANCH
S. of StonyBrook Dr., Champaign, IL
Built 1969 Load: 43.4 t ADT: 7,500
OLD US 50
FairOver: BEAVER CREEK
1.2MI W BECKEMEYER, Clinton, IL
Built 1988 Load: 43.4 t ADT: 5,900
26TH ST
FairOver: DES PLAINES RIVER
1.3 M W IL 43, Cook, IL
Built 1929 Load: 43.4 t ADT: 13,000
I-294 SB
FairOver: DES PLAINES RIV
0.6 M S ILL 62 P11, Cook, IL
Built 1958 Load: 43.4 t ADT: 82,250
FAP-781 (ILL-33)
FairOver: BIG CREEK
NE CL STOY, Crawford, IL
Built 1997 Load: 43.4 t ADT: 5,400
US 51 (NB)(FAP 322
FairOver: TEN MILE CREEK
0.4 M S OF BUS US 51, De Witt, IL
Built 1985 Load: 43.4 t ADT: 7,450
IL 10 (FAP 721)
FairOver: SALT CREEK
4 MI E OF CLINTON, De Witt, IL
Built 2008 Load: 43.4 t ADT: 1,450
FAS 1751(US-40)
FairOver: HURRICANE CK BRANCH
2.4 MI E BOND CO LN, Fayette, IL
Built 1943 Load: 43.4 t ADT: 1,400
TR 41 BRENTON
FairOver: STREAM
1560E 2100N, Ford, IL
Built 1972 Load: 43.4 t ADT: 25
ILL 97
FairOver: TRIB BIG CREEK
3.5 MI S OF CUBA, Fulton, IL
Built 1928 Load: 43.4 t ADT: 1,450
ILL 97
FairOver: LOST GROVE CREEK
3.2 MI S OF FAIRVIEW, Fulton, IL
Built 1990 Load: 43.4 t ADT: 1,300
REED ROAD TR-107B
FairOver: MAZON RIVER
.33 MI W GORMAN RD, Grundy, IL
Built 1981 Load: 43.4 t ADT: 275
ILL 94
FairOver: FALL CREEK
4.3 MI N JCT 94&164, Henderson, IL
Built 1991 Load: 43.4 t ADT: 275
IL 78
FairOver: SPECIAL DITCH
0.3 MI. N. HOOPPOLE, Henry, IL
Built 1993 Load: 43.4 t ADT: 1,200
TR 283A
FairOver: LOUIS CREEK
2N BUCKLEY OFF US45E, Iroquois, IL
Built 1983 Load: 43.4 t ADT: 25
FAS-826
FairOver: SNOW CREEK
3 MI N WOODLAWN, Jefferson, IL
Built 1976 Load: 43.4 t ADT: 2,000
FAS-826
FairOver: BIG MUDDY RIVER
3.5 MI N WOODLAWN, Jefferson, IL
Built 1976 Load: 43.4 t ADT: 2,000
GALENA BLVD
FairOver: BLACKBERRY CREEK
1.25 M E OF IL 56, Kane, IL
Built 1995 Load: 43.4 t ADT: 14,400
I-55 NB
FairOver: ICRR & KICKAPOO OVFL
2.1 M E I-55/155INT, Logan, IL
Built 1974 Load: 43.4 t ADT: 10,750
I-55 SB
FairOver: ICRR & KICKAPOO OVFL
2.1 M E I-55/155INT, Logan, IL
Built 1974 Load: 43.4 t ADT: 10,750
IL 3
FairOver: NSRR
0.6MI N OF IL 143, Madison, IL
Built 1947 Load: 43.4 t ADT: 9,950
US 51 (FAP 322)
FairOver: South TURKEY CREEK
N CENTRAL CITY, Marion, IL
Built 1982 Load: 43.4 t ADT: 4,050
ILL 117
FairOver: NORTH CROW CREEK
2.5 MI S OF ILL 17, Marshall, IL
Built 1981 Load: 43.4 t ADT: 800
US 67
FairOver: TROUBLESOME CREEK
1.7 MI S OF US 136, McDonough, IL
Built 1923 Load: 43.4 t ADT: 2,400
FAS-481 (CH-32)
FairOver: Br Sugar Creek
1.5 MI NW SHIRLEY, McLean, IL
Built 1990 Load: 43.4 t ADT: 900
FAS 472 CH 12
FairOver: SIX MILE CREEK
2.0 MI W HUDSON, McLean, IL
Built 1983 Load: 43.4 t ADT: 775
IL 2
FairOver: DRAINAGE DITCH
2 MI N GRAND DETOUR, Ogle, IL
Built 1984 Load: 43.4 t ADT: 3,350
Showing 12,601-12,650 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.