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
I-74
FairOver: ROCK CREEK
7.2 MI E OF ILL 117, McLean, IL
Built 1964 Load: 32.7 t ADT: 14,200
I-74
FairOver: ROCK CREEK
7.2 MI E OF ILL 117, McLean, IL
Built 1964 Load: 32.7 t ADT: 14,200
FAS 489 CH 21
FairOver: N FORK SALT CREEK
2.0 MI N LEROY, McLean, IL
Built 1933 Load: 32.7 t ADT: 1,450
TR 26
FairOver: CLARY CREEK
.5. M N TALLULA, Menard, IL
Built 1988 Load: 32.7 t ADT: 75
IL 16
FairOver: SANGAMON CREEK
W CTY LMTS OHLMAN, Montgomery, IL
Built 1923 Load: 32.7 t ADT: 1,700
ILL ROUTE 26
FairOver: FIVE MILE CREEK
5 MI N OF POLO, Ogle, IL
Built 1974 Load: 32.7 t ADT: 1,850
PECATONICA RD
FairOver: DM&E RR
2.5 MI E LEAF RIVER, Ogle, IL
Built 1957 Load: 32.7 t ADT: 850
W MUNITIONS ROAD
FairOver: E BRANCH LAMARSH CREEK
0.2 MILES NORTH OF SOUTH, Peoria, IL
Built 1970 Load: 32.7 t ADT: 250
FAS 938
FairOver: LIMEKILN SLOUGH
6 MI E ULLIN, Pulaski, IL
Built 1984 Load: 32.7 t ADT: 1,350
US RT 67
FairOver: N CHANNEL ROCK RIVER
S EDGE ROCK ISLAND, Rock Island, IL
Built 1948 Load: 32.7 t ADT: 10,000
I-72/US 36(WB)
FairOver: PLUM CREEK
2.6M E IL 100 INTCHG, Scott, IL
Built 1981 Load: 32.7 t ADT: 4,825
FAS 642(CH 19)
FairOver: ROBINSON CREEK
4.2 MI W FINDLAY, Shelby, IL
Built 1953 Load: 32.7 t ADT: 950
ILL 15
FairOver: HARDING DITCH
0.3 M W JCT 157, St. Clair, IL
Built 1940 Load: 32.7 t ADT: 30,000
IL 161
FairOver: NSRR
0.6 mi E of IL 159, St. Clair, IL
Built 1990 Load: 32.7 t ADT: 19,600
GRAY PLAZA
FairOver: TRIBUTARY SILVER CREEK
130' N OF AIR GUARD WAY, St. Clair, IL
Built 1970 Load: 32.7 t ADT: 20
CH 14
FairOver: STREAM
NE COR-17-T14NR6E, Stark, IL
Built 1900 Load: 32.7 t ADT: 100
ILL RTE 127
FairOver: DUTCH CREEK
2.4 MI SO. JONESBORO, Union, IL
Built 1984 Load: 32.7 t ADT: 1,200
FAP-332 (ILL-1)
FairOver: BONPAS CREEK
1.5 MI SW COWLING, Wabash, IL
Built 1935 Load: 32.7 t ADT: 2,100
I 64 EB
FairOver: POND CREEK
.25 MI E WAYNE CO LN, White, IL
Built 1971 Load: 32.7 t ADT: 6,000
FAS-887 (CH-7)
FairOver: DRAINAGE DITCH
1.5 MI NE NEW HAVEN, White, IL
Built 1996 Load: 32.7 t ADT: 1,700
ILL 78
FairOver: STREAM
2.5 MI S OF MORRISON, Whiteside, IL
Built 1979 Load: 32.7 t ADT: 1,800
HAHNAMAN RD
FairOver: WINNEBAGO DRAINAGE D
1 MI.N OF DEER GROVE, Whiteside, IL
Built 1963 Load: 32.7 t ADT: 250
US 45,52
FairOver: SMALL STREAM
3.4 M S OF US 52, Will, IL
Built 1968 Load: 32.7 t ADT: 6,700
ROWELL ROAD
FairOver: SUGAR RUN
0.2 MI SOUTH US-52, Will, IL
Built 1993 Load: 32.7 t ADT: 1,400
RIDGELAND AVE
FairOver: STREAM
0.4 MI N. STUNKEL RD, Will, IL
Built 1980 Load: 32.7 t ADT: 1,450
PERRYVILLE RD
FairOver: MADIGAN CR
AT CHARLES ST, Winnebago, IL
Built 1973 Load: 32.7 t ADT: 19,200
BRADLEY RD
FairOver: SPRING CREEK
0.07 M S SPRING CR R, Winnebago, IL
Built 1977 Load: 32.7 t ADT: 350
CLIFFORD AVE
FairOver: LOVES PARK CREEK
NORTHEAST LOVES PARK, Winnebago, IL
Built 1961 Load: 32.7 t ADT: 2,700
ILL 117 IN EUREKA
FairOver: WALNUT CREEK
4.22 MI S OF ILL 116, Woodford, IL
Built 1929 Load: 32.7 t ADT: 4,350
FAI 70 WB
FairOver: W BR SHOAL CREEK
2.1 MI E POCAHONTAS, Bond, IL
Built 1967 Load: 33.0 t ADT: 13,100
FAI 70 EB
FairOver: W BR SHOAL CREEK
2.1 MI E POCAHONTAS, Bond, IL
Built 1967 Load: 33.0 t ADT: 13,100
IL 140
FairOver: Shoal Creek
2.7mi E Old Ripley, Bond, IL
Built 1930 Load: 33.0 t ADT: 2,050
IL 173
FairOver: BEAVER CREEK
0.5 MI. SW. CAPRON, Boone, IL
Built 1994 Load: 33.0 t ADT: 4,550
TR 158
FairOver: LOGAN CREEK
3.0MISE MT STERLING, Brown, IL
Built 1982 Load: 33.0 t ADT: 25
I-180 NB
FairOver: BRUSH CREEK
1.1 MI N ILL 26, Bureau, IL
Built 1968 Load: 33.0 t ADT: 1,300
I-180 SB
FairOver: BRUSH CREEK
1.1 MI N ILL 26, Bureau, IL
Built 1968 Load: 33.0 t ADT: 1,300
TR 73
FairOver: MADISON CREEK BRANCH
1 MI. S. BATCHTOWN, Calhoun, IL
Built 1989 Load: 33.0 t ADT: 50
US 45(FAP 800)
FairOver: DITCH
S EDGE THOMASBORO, Champaign, IL
Built 1942 Load: 33.0 t ADT: 8,500
I-57
FairOver: STREAM
1.5 MI S THOMASBORO, Champaign, IL
Built 1969 Load: 33.0 t ADT: 22,500
CH 1-FAS 0645
FairOver: S. FORK SANGAMON R.
1.25 MI. S. TAYLORVL, Christian, IL
Built 1971 Load: 33.0 t ADT: 2,550
FAP-328 (US-45)
FairOver: LITTLE WABASH RIVER
.5 MI N LOUISVILLE, Clay, IL
Built 1967 Load: 33.0 t ADT: 3,550
FAP-327 (US-50)
FairOver: RACCOON CREEK
3 MI W JCT US-45N, Clay, IL
Built 1970 Load: 33.0 t ADT: 2,800
TR 157/HIGHLINE RO
FairOver: LAKE BRANCH
1.5 MI S OF AVISTON, Clinton, IL
Built 1909 Load: 33.0 t ADT: 525
IL 43 (HARLEM AVE
FairOver: RR - CSXT
0.1 S 95TH ST, Cook, IL
Built 1961 Load: 33.0 t ADT: 38,700
GOLF RD
FairOver: E FK N BR CHI RIVER
1.2 M E IL 43, Cook, IL
Built 1928 Load: 33.0 t ADT: 33,400
US 6 (159TH ST)
FairOver: CAL UNION DITCH
0.9 M E IL 1, Cook, IL
Built 1953 Load: 33.0 t ADT: 30,700
I-90E/294S to I-19
FairOver: Willow Creek
0.25 Mi S of I-90, Cook, IL
Built 1959 Load: 33.0 t ADT: 19,200
RIDGELAND AVE
FairOver: CAL SAG CHANNEL
0.6 M S 115TH P26, Cook, IL
Built 1967 Load: 33.0 t ADT: 24,300
167TH STREET
FairOver: MIDLOTHIAN CREEK
0.4 MI E CENTRAL AVE, Cook, IL
Built 1973 Load: 33.0 t ADT: 15,400
WILLIAM ST
FairOver: WELLER CR
0.24 M N ILL 58 P5, Cook, IL
Built 1972 Load: 33.0 t ADT: 600
Showing 10,251-10,300 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.