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 55
FairOver: KICKAPOO CK
1 MI E LAWNDALE, Logan, IL
Built 1984 Load: 32.4 t ADT: 50
TR 124
FairOver: LAKE FORK CREEK
2.25 MI N CORNLAND, Logan, IL
Built 1976 Load: 32.4 t ADT: 20
TR 154
FairOver: LAKE FORK
1 MI NE CORNLAND, Logan, IL
Built 1978 Load: 32.4 t ADT: 20
TR 207
FairOver: LAKE FORK CREEK
1 E 3 MI N CORNLAND, Logan, IL
Built 1983 Load: 32.4 t ADT: 20
TR 126
FairOver: LAKE FORK CREEK
4 E 1 MI S ELKHART, Logan, IL
Built 1985 Load: 32.4 t ADT: 50
EM CHURCH RD
FairOver: KICKAPOO CK
1.5 MI NW LAWNDALE, Logan, IL
Built 1979 Load: 32.4 t ADT: 175
TR 230
FairOver: SUGAR CREEK
4 NW OF ATLANTA, Logan, IL
Built 1985 Load: 32.4 t ADT: 175
TR 13
FairOver: SUGAR CREEK
2.5 MI E UNION, Logan, IL
Built 1986 Load: 32.4 t ADT: 50
TR 25
FairOver: SUGAR CREEK
1.5MI SE OF UNION, Logan, IL
Built 1994 Load: 32.4 t ADT: 20
TR 218
FairOver: SALT CK TRIB
1 N 1.5 MI W MT PLSK, Logan, IL
Built 1955 Load: 32.4 t ADT: 50
TR 322
FairOver: TRIB TO DEER CR
1 M W 3.8 M N BEASON, Logan, IL
Built 2009 Load: 32.4 t ADT: 150
TR 146
FairOver: SUGAR CK
2 MI N BELL STA, Logan, IL
Built 1987 Load: 32.4 t ADT: 100
TR 82
FairOver: PRAIRIE CK
1 E 2.5 MI S EMDEN, Logan, IL
Built 1987 Load: 32.4 t ADT: 300
TR 17
FairOver: PRAIRIE CREEK
1.5 S .5 MI W EMDEN, Logan, IL
Built 1978 Load: 32.4 t ADT: 35
TR 46
FairOver: PRAIRIE CK TRIB
4.5 MI W 1MI S HARBG, Logan, IL
Built 1979 Load: 32.4 t ADT: 20
TR 9
FairOver: PRAIRIE CREEK
1 S .5 MI E SAN JOSE, Logan, IL
Built 1982 Load: 32.4 t ADT: 50
TR 22
FairOver: PRAIRIE CK
4 S 2 MI ESAN JOSE, Logan, IL
Built 1987 Load: 32.4 t ADT: 50
TR 33
FairOver: PRAIRE CREEK
4 S 1 E SAN JOSE, Logan, IL
Built 2005 Load: 32.4 t ADT: 150
TR 44
FairOver: LOCAL DRAINAGE
2 MI S 3 MI E N HOLL, Logan, IL
Built 1975 Load: 32.4 t ADT: 50
TR 2
FairOver: SUGAR CREEK
1.5 MI SW NEW HOLLND, Logan, IL
Built 1986 Load: 32.4 t ADT: 35
TR 60
FairOver: SUGAR CREEK TRIB
1 MI NW BURTON VIEW, Logan, IL
Built 1985 Load: 32.4 t ADT: 20
TR 103
FairOver: SUGAR CREEK
2.5MI SE NEW HOLLAND, Logan, IL
Built 1995 Load: 32.4 t ADT: 20
TR 80
FairOver: SUGAR CREEK
1 E 2.5 N BURTONVIEW, Logan, IL
Built 1982 Load: 32.4 t ADT: 75
TR 106A
FairOver: SUGAR CREEK
2 MI S HARTSBURG, Logan, IL
Built 1985 Load: 32.4 t ADT: 25
TR 20A
FairOver: SOUTH FORK LAKE FORK
4.5 MI NW WARRENSBUR, Logan, IL
Built 1987 Load: 32.4 t ADT: 35
FAS 551(CH 27)
FairOver: SANGAMON RIVER
.5 MI S LINCOLN PK, Macon, IL
Built 1940 Load: 32.4 t ADT: 250
MOUND RD(FAU 7359)
FairOver: STEVENS CREEK
N SIDE OF DECATUR, Macon, IL
Built 1968 Load: 32.4 t ADT: 4,650
CH 36(BAKER RD)
FairOver: WILLOW BRANCH
2.9 MI SW OF MACON, Macon, IL
Built 1976 Load: 32.4 t ADT: 100
TR 220 D SEE REMAR
FairOver: STREAM
1.5 MI NE DECATUR, Macon, IL
Built 1978 Load: 32.4 t ADT: 525
TR 24(PLEASANT VIE
FairOver: MOSQUITO CREEK
2 MI N BLUE MOUND, Macon, IL
Built 1978 Load: 32.4 t ADT: 200
TR 269(JACKSON RD)
FairOver: WILLOW BRANCH
3.25 MI SW OF MACON, Macon, IL
Built 1978 Load: 32.4 t ADT: 35
TR 53(FAU 7356)
FairOver: STEVENS CREEK
S EDGE HICK PT GOLF, Macon, IL
Built 1978 Load: 32.4 t ADT: 1,750
HILL ST(MS 6670A)
FairOver: SPRING CREEK
0.1 MI N OAKLAND AVE, Macon, IL
Built 1979 Load: 32.4 t ADT: 100
TR 53B(E HICKORY P
FairOver: SPRING CREEK
1.9 MI SE FORSYTHH, Macon, IL
Built 1978 Load: 32.4 t ADT: 1,750
TR 109(ILLIOPOLIS
FairOver: LONG POINT SLOUGH
2 MI W OF NIANTIC, Macon, IL
Built 1981 Load: 32.4 t ADT: 100
TR 109(ILLIOPOLIS
FairOver: WILLOW BRANCH
2.2 MI W NIANTIC, Macon, IL
Built 1981 Load: 32.4 t ADT: 100
CARROLL ST
FairOver: SPRING CREEK
BETWEEN MOUND PERSHI, Macon, IL
Built 1983 Load: 32.4 t ADT: 200
TR 29 Schellabarg
FairOver: STEVENS CREEK
1.6 MI NW FORSYTH, Macon, IL
Built 1979 Load: 32.4 t ADT: 25
TR 128B(OAKLAND AV
FairOver: STEVENS CREEK
1.6 MI NW FORSYTH, Macon, IL
Built 1979 Load: 32.4 t ADT: 100
TR 52(BOODY RD)
FairOver: DRY BRANCH
2.5 MI W MACON, Macon, IL
Built 1981 Load: 32.4 t ADT: 50
TR 157A(RIDGE RD)
FairOver: LONG CREEK
3 MI N OF CASNER, Macon, IL
Built 1980 Load: 32.4 t ADT: 50
TR 255(MOSQUITO CR
FairOver: MOSQUITO CREEK
2 MI NE BLUE MOUND, Macon, IL
Built 1982 Load: 32.4 t ADT: 25
TR 32(ARCHERY CLUB
FairOver: MOSQUITO CREEK
2 MI NE BLUE MOUND, Macon, IL
Built 1982 Load: 32.4 t ADT: 25
TR 4(ACOM ROAD)
FairOver: WILLOW BRANCH
1.7 MI W NIANTIC, Macon, IL
Built 1985 Load: 32.4 t ADT: 100
TR 8(MOONEY RD)
FairOver: WILLOW BRANCH
1 MI NW NIANTIC, Macon, IL
Built 1983 Load: 32.4 t ADT: 50
TR 8(MOONEY RD)
FairOver: WILLOW BRANCH
1 MI NW NIANTIC, Macon, IL
Built 1983 Load: 32.4 t ADT: 50
TR 20A(N 3RD P M
FairOver: WILLOW BRANCH
2.6 MI NE NIANTIC, Macon, IL
Built 1982 Load: 32.4 t ADT: 75
WEAVER AVE(MS 2606
FairOver: STEVENS CREEK
IN CITY OF FORSYTH, Macon, IL
Built 1982 Load: 32.4 t ADT: 2,800
TR 36A(ROSEDALE RD
FairOver: MOSQUITO CREEK
2 MI NE BLUE MOUND, Macon, IL
Built 1982 Load: 32.4 t ADT: 20
TR 270(CEMETERY RD
FairOver: FRIENDS CREEK
1.9 MI NE ARGENTA, Macon, IL
Built 1981 Load: 32.4 t ADT: 150
Showing 8,701-8,750 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.