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
HARMON ROAD
FairOver: DRAINAGE DITCH
0.5 M N OF HARMON, Lee, IL
Built 1965 Load: 36.6 t ADT: 450
US 24
FairOver: INDIAN CREEK
EAST EDGE FAIRBURY, Livingston, IL
Built 1964 Load: 36.6 t ADT: 4,800
IL 17 FAP 649
FairOver: TRIB TO VERMILION RV
6.51 MI E OF IL 23, Livingston, IL
Built 2001 Load: 36.6 t ADT: 525
TR 208
FairOver: WATERWAY
210 N, 2300 E, Livingston, IL
Built 1978 Load: 36.6 t ADT: 125
TR 30(STRAWN RD)
FairOver: DITCH
IL 121, Macon, IL
Built 1909 Load: 36.6 t ADT: 25
STUNTN BUNKR HIL R
FairOver: W. FORK CAHOKIA CR.
4 MI. W. STAUNTON, Macoupin, IL
Built 1973 Load: 36.6 t ADT: 900
ARKANSAS RD/ TR 36
FairOver: BRANCH OF SUGAR CK
2.0 MI S HIGHLAND, Madison, IL
Built 1986 Load: 36.6 t ADT: 725
US-50
FairOver: DUMS CREEK EAST
4.5 MI E SALEM, Marion, IL
Built 1952 Load: 36.6 t ADT: 3,750
CH-20
FairOver: DAVIDSON CREEK
1 MI W TONTI, Marion, IL
Built 1977 Load: 36.6 t ADT: 350
ILL 78
FairOver: WHITE OAK CREEK
2.8MI S JCT 78/136, Mason, IL
Built 1931 Load: 36.6 t ADT: 1,750
TR 131 A
FairOver: PRAIRIE CK
4.5 MI E MASON CTY, Mason, IL
Built 1979 Load: 36.6 t ADT: 50
I-74 EB
FairOver: N FORK SALT CREEK
14.86 MI E OF US 51, McLean, IL
Built 1970 Load: 36.6 t ADT: 10,750
I-74 WB
FairOver: N FORK SALT CREEK
14.86 MI E OF US 51, McLean, IL
Built 1970 Load: 36.6 t ADT: 10,750
ILL 165
FairOver: BR MACKINAW RIVER
10.9 MI N OF ILL 9, McLean, IL
Built 1990 Load: 36.6 t ADT: 750
ILL 97
FairOver: SANGAMON R OVERFLOW
.5 MI SE SANGAMON R., Menard, IL
Built 1938 Load: 36.6 t ADT: 1,750
TR 150
FairOver: LITTLE INDIAN CREEK
3MI NW LITERBERRY, Morgan, IL
Built 1988 Load: 36.6 t ADT: 75
ILL 29
FairOver: CROW CREEK
3 MI N OF SPARLAND, Peoria, IL
Built 1944 Load: 36.6 t ADT: 3,050
CEDAR HILLS DR
FairOver: DICKISON RUN
SE1/4 17 MEDINA TWP, Peoria, IL
Built 1987 Load: 36.6 t ADT: 2,850
ROSENBOHM RD
FairOver: WALNUT CREEK
NEAR CENT32TIONR5E, Peoria, IL
Built 1973 Load: 36.6 t ADT: 25
TR 100
FairOver: MADDEN CREEK
1.0 MI SE LODGE, Piatt, IL
Built 1968 Load: 36.6 t ADT: 100
TR 178
FairOver: DRAINAGE DITCH
1.0 MI NW IVESDALE, Piatt, IL
Built 1964 Load: 36.6 t ADT: 25
TR 18
FairOver: BOAR CREEK
2 MI NW VILLA RIDGE, Pulaski, IL
Built 1994 Load: 36.6 t ADT: 125
FAS 849
FairOver: PLUM CREEK
2 MI S OF BALDWIN, Randolph, IL
Built 1984 Load: 36.6 t ADT: 850
FAP-327 (US-50)
FairOver: INDIANA HI-RAILROAD
.4 MI E JCT ILL-130, Richland, IL
Built 1963 Load: 36.6 t ADT: 3,350
TR 149
FairOver: S BRANCH SUGAR CR.
3.5 NE RUSHVILLE, Schuyler, IL
Built 1978 Load: 36.6 t ADT: 25
FAI 255
FairOver: P.DUPONT&BLUE WATERS
.50 M SW OF ILL 157, St. Clair, IL
Built 1981 Load: 36.6 t ADT: 31,400
ILL 177
FairOver: LOOP CREEK
3.9 MI W JNC ILL 4, St. Clair, IL
Built 1990 Load: 36.6 t ADT: 7,150
BALDWIN RD/ FAS 84
FairOver: DOZA CREEK
4.26 MI S ILL RTE 13, St. Clair, IL
Built 1971 Load: 36.6 t ADT: 1,300
ILL 93
FairOver: W FORK SPOON RIVER
7 MI W OF BRADFORD, Stark, IL
Built 1993 Load: 36.6 t ADT: 950
W STATE LINE ROAD
FairOver: SPAFFORD CREEK
5.0 MI. WT. RTE. 73, Stephenson, IL
Built 1930 Load: 36.6 t ADT: 50
W NEEBEL ROAD
FairOver: BR OF E PLUM RIVER
3.5 MI W PEARL CITY, Stephenson, IL
Built 1910 Load: 36.6 t ADT: 25
WOODLEY RD - TR 8
FairOver: DRAINAGE DITCH
SW-16-T23NR7W, Tazewell, IL
Built 1976 Load: 36.6 t ADT: 75
OREGON (FAU 7047)
FairOver: CNRL RR
NE SIDE OFDANVILLE, Vermilion, IL
Built 1980 Load: 36.6 t ADT: 2,600
CH 1
FairOver: BR BEAVER POND CREEK
0.5 MI E ADDIEVILLE, Washington, IL
Built 1919 Load: 36.6 t ADT: 450
FAI-64 EB
FairOver: SKILLET FORK BRANCH
0.5 MI W US-45 INT, Wayne, IL
Built 1974 Load: 36.6 t ADT: 5,500
FAI-64 WB
FairOver: SKILLET FORK BRANCH
0.5 MI W US-45 INT, Wayne, IL
Built 1974 Load: 36.6 t ADT: 5,500
FAP-857 (ILL-14)
FairOver: FOX RIVER SLOUGH
5 MI E CROSSVILLE, White, IL
Built 1932 Load: 36.6 t ADT: 250
CH-12
FairOver: SKILLET FORK
6 MI NE ENFIELD, White, IL
Built 1972 Load: 36.6 t ADT: 50
IL 84
FairOver: JOHNSON CREEK
2.5 M N ILL 136, Whiteside, IL
Built 1980 Load: 36.6 t ADT: 5,500
MELVIN ROAD
FairOver: HOWLAND CREEK
2 MI E OF ROCK FALLS, Whiteside, IL
Built 1960 Load: 36.6 t ADT: 650
SCIENCE RIDGE ROAD
FairOver: ELKHORN CREEK
1 MI NW OF STERLING, Whiteside, IL
Built 1958 Load: 36.6 t ADT: 2,300
I- 57 NB
FairOver: ABANDONED RR
12.8 M S OF US 30, Will, IL
Built 1967 Load: 36.6 t ADT: 14,400
US 30
FairOver: RR - EJ&E
0.7 M E OF US 6, Will, IL
Built 1985 Load: 36.6 t ADT: 13,200
EAGLE LAKE ROAD
FairOver: PLUM CREEK
1.8 MI W.IL 1, Will, IL
Built 1917 Load: 36.6 t ADT: 225
ILL 13 WB
FairOver: CRAB ORCHARD LAKE
1.1 MI E JACKSON CO, Williamson, IL
Built 1939 Load: 36.6 t ADT: 25,600
MORGAN ST
FairOver: ROCK RIVER
0.3 mile E OF IL 2, Winnebago, IL
Built 2013 Load: 36.6 t ADT: 7,600
CH 13
FairOver: SNAG CREEK
6.3 MI N OF ROANOKE, Woodford, IL
Built 1989 Load: 36.6 t ADT: 150
TR 72
FairOver: JENKINS CREEK
2.0 MI. N. E. VRSA, Adams, IL
Built 1983 Load: 36.9 t ADT: 100
FAS 2943
FairOver: BROWNVILLECREEK
1.5 MI E OF THEBES, Alexander, IL
Built 1974 Load: 36.9 t ADT: 250
TR 106
FairOver: E FORK SANDY CREEK
2.3 M.W.OF TAMMS, Alexander, IL
Built 1977 Load: 36.9 t ADT: 25
Showing 11,251-11,300 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.