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 168
FairOver: W FORK MAZON R
2835N,2000E, Livingston, IL
Built 1961 Load: 30.5 t ADT: 25
TR 31
FairOver: CLEAR CK
2.0 M E ATLANTA, Logan, IL
Built 1974 Load: 30.5 t ADT: 100
TR 45
FairOver: PRAIRIE CK
3.5 N 3 E NEW HOLLND, Logan, IL
Built 1965 Load: 30.5 t ADT: 75
US 36(FAP 320)
FairOver: LAKE DECATUR
IN DECATUR, Macon, IL
Built 1955 Load: 30.5 t ADT: 20,900
TR 93
FairOver: JOES CRK
2.5 W .5 S PALMYRA, Macoupin, IL
Built 1957 Load: 30.5 t ADT: 25
SALISBURY ST/FAU91
FairOver: MISS RIVER
VENICE, Madison, IL
Built 1910 Load: 30.5 t ADT: 14,300
TR 130B (TH-S51)
FairOver: S BRANCH CROW CREEK
T29N-R1E-3PM SEC 31, Marshall, IL
Built 1976 Load: 30.5 t ADT: 50
TR 114 MIDWAY RD
FairOver: MASSAC CREEK
0.75 MI N OF CH 8, Massac, IL
Built 1999 Load: 30.5 t ADT: 50
FAS 479 CH 59
FairOver: MIDDLE FORK SUGAR CK
1 MILE S STANFORD, McLean, IL
Built 1928 Load: 30.5 t ADT: 325
TR 149
FairOver: ROCK CREEK
6.0 MI S PETERSBURG, Menard, IL
Built 1977 Load: 30.5 t ADT: 75
LEBANON ST(MS 4500
FairOver: ASA CREEK
SULLIVAN-LEBANON ST., Moultrie, IL
Built 1971 Load: 30.5 t ADT: 775
ADELINE RD
FairOver: LEAF RIVER
NORTH EDGE ADELINE, Ogle, IL
Built 1958 Load: 30.5 t ADT: 450
FREEPORT RD
FairOver: FIVE MILE CREEK
5.0 MI NW POLO, Ogle, IL
Built 1965 Load: 30.5 t ADT: 1,300
FREEPORT ROAD
FairOver: UNNAMED STREAM
2.5 MI NW FORRESTON, Ogle, IL
Built 1967 Load: 30.5 t ADT: 1,500
I-72 / US 36 (EB)
FairOver: WALNUT CR/SPRAGUE DT
2.12M W IL96/HULL IN, Pike, IL
Built 1986 Load: 30.5 t ADT: 4,700
I-72 / US 36 (WB)
FairOver: WALNUT CR/SPRAGUE DT
2.12M W IL96/HULL IN, Pike, IL
Built 1986 Load: 30.5 t ADT: 4,700
PSB I-55,64;US 40
FairOver: MISSISSIPPI RIVER
POPLAR ST BR - MoDOT, St. Clair, IL
Built 1963 Load: 30.5 t ADT: 117,700
KORTE SEWALD TR 26
FairOver: BR LITTLE SILVER CR
0.5 MI N FAUST RD, St. Clair, IL
Built 1960 Load: 30.5 t ADT: 50
SBI 2B (UNMARKED)
FairOver: LITTLE CREEK
3 MI N DONGOLA, Union, IL
Built 1920 Load: 30.5 t ADT: 25
CH 3
FairOver: MIDDLE BRANCH
2.5 MI S CHENEYVILLE, Vermilion, IL
Built 1941 Load: 30.5 t ADT: 250
TR 448
FairOver: STONY CREEK
5 MI NE DANVILLE, Vermilion, IL
Built 1974 Load: 30.5 t ADT: 75
CH 3
FairOver: EAST BRANCH
4 MI SE ROSSVILLE, Vermilion, IL
Built 1983 Load: 30.5 t ADT: 350
FAS-815
FairOver: FRENCH CREEK
1 MI W GRAYVILLE, White, IL
Built 1952 Load: 30.5 t ADT: 650
PILGRIM RD
FairOver: ROCK CREEK
3.5 MI W OF COLETA, Whiteside, IL
Built 1972 Load: 30.5 t ADT: 525
US 52
FairOver: N BR JACKSON CREEK
4 M SE OF IL 53, Will, IL
Built 1927 Load: 30.5 t ADT: 9,150
CUNNINGHAM RD
FairOver: UNNAMED CREEK
1.2 M E PCATONICA RD, Winnebago, IL
Built 1960 Load: 30.5 t ADT: 250
EDSON RD (TR 61 A)
FairOver: UNNAMED DITCH
5 MI S CHERRY VALLEY, Winnebago, IL
Built 1971 Load: 30.5 t ADT: 100
PARK AVE
FairOver: TURTLE CREEK
SOUTH BELOIT, Winnebago, IL
Built 1988 Load: 30.5 t ADT: 1,475
E WATCH DOG ROAD
FairOver: OTTER CREEK
5.5 MI E CHADWICK, Carroll, IL
Built 1931 Load: 30.8 t ADT: 50
TR 78
FairOver: WILDCAT SLOUGH
5 MI S OF FISHER, Champaign, IL
Built 1972 Load: 30.8 t ADT: 600
TR 920
FairOver: HOMER LAKE
3 MI NW OF HOMER, Champaign, IL
Built 1969 Load: 30.8 t ADT: 200
FAS 643-TR 214
FairOver: LOCUST CREEK
1.5 MI S. OWANECO, Christian, IL
Built 1970 Load: 30.8 t ADT: 100
FAS 644
FairOver: SANGAMON RIVER
5.5 M ENE MT AUBURN, Christian, IL
Built 1980 Load: 30.8 t ADT: 550
I-57 (NB)
FairOver: S FORK FLAT BRANCH
.5 MI S HUMBOLDT, Coles, IL
Built 1967 Load: 30.8 t ADT: 11,350
I-57 (SB)
FairOver: S FORK FLAT BRANCH
.5 MI S HUMBOLDT, Coles, IL
Built 1967 Load: 30.8 t ADT: 11,350
US 45(FAP 824)
FairOver: BUTTERMILK DITCH
AT ETNA RD, Coles, IL
Built 1975 Load: 30.8 t ADT: 4,700
RIDGELAND AVE
FairOver: STONY CR
.14M S OF SOWEST HWY, Cook, IL
Built 1948 Load: 30.8 t ADT: 16,700
104TH AVE
FairOver: CAL SAG CHANNEL
0.5 M S 107TH P19, Cook, IL
Built 1964 Load: 30.8 t ADT: 2,400
COTTAGE GROVE AVE
FairOver: NORTH CREEK
0.5 M S 183RD P2, Cook, IL
Built 1940 Load: 30.8 t ADT: 4,500
BRYN MAWR AVE
FairOver: N SHORE CHANNEL
5600 N & 3100 W, Cook, IL
Built 1968 Load: 30.8 t ADT: 7,750
ROOSEVELT ROAD
FairOver: UNION STATION TRACKS
1200S 300W TO 400W, Cook, IL
Built 1925 Load: 30.8 t ADT: 26,800
THOMPSON ROAD
FairOver: BR KISHWAUKEE RIVER
2550N 1055E, DeKalb, IL
Built 1995 Load: 30.8 t ADT: 50
TR 159
FairOver: DRAINAGE DITCH
W EDGE OF KEMP, Douglas, IL
Built 1978 Load: 30.8 t ADT: 75
TR 64
FairOver: HICKORY GROVE CREEK
1.5 M W REDMON N .75, Edgar, IL
Built 1965 Load: 30.8 t ADT: 50
CH-9
FairOver: GREEN CREEK
3 MI N EFFINGHAM, Effingham, IL
Built 1977 Load: 30.8 t ADT: 600
FAP-322 (US-51)
FairOver: SANDY RUN CREEK
1.5 MI S US-40, Fayette, IL
Built 1965 Load: 30.8 t ADT: 3,500
ILL 9
FairOver: DRAINAGE DITCH
2.10 MI E OF ILL 115, Ford, IL
Built 1973 Load: 30.8 t ADT: 2,500
TR 12A DRUMMER
FairOver: STREAM
210N 300E, Ford, IL
Built 1972 Load: 30.8 t ADT: 75
TR-248
FairOver: BIRCH CREEK
3 MI SE ROODHOUSE, Greene, IL
Built 1982 Load: 30.8 t ADT: 75
TR-178
FairOver: SHELTON CREEK DRAIN
2.5 MI NW BELLE PRAI, Hamilton, IL
Built 1978 Load: 30.8 t ADT: 25
Showing 6,801-6,850 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.