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 237
FairOver: DRAINAGE DITCH
3.5SE WOODLAND, Iroquois, IL
Built 1910 Load: 24.3 t ADT: 25
TR 2 D
FairOver: STREAM
0.2 Mi S of CR1400S, Iroquois, IL
Built 1953 Load: 24.3 t ADT: 75
TR 363A
FairOver: TRIB FOUNTAIN CR
3MI E FOUNTAIN CR, Iroquois, IL
Built 1937 Load: 24.3 t ADT: 125
HIGH SCHOOL ROAD
FairOver: STREAM
NW CORNER M'BORO, Jackson, IL
Built 1978 Load: 24.3 t ADT: 10
FAP-781 (ILL-33)
FairOver: N FORK EMBARRAS RV
JASPER-CRAWFORD C L, Jasper, IL
Built 1972 Load: 24.3 t ADT: 3,050
FAS-704
FairOver: WEST CROOKED CREEK
1 MI E ROSE HILL, Jasper, IL
Built 1965 Load: 24.3 t ADT: 375
FAS 2711 CH 10
FairOver: FOX RIVER
1.5 N.W. W LIBERTY, Jasper, IL
Built 1939 Load: 24.3 t ADT: 175
TR-201
FairOver: LAWS CREEK
3.5 MI W NEWTON, Jasper, IL
Built 1909 Load: 24.3 t ADT: 200
FAS 2708 CH 13
FairOver: EAST CROOKED CREEK
4.89 MI E HIDALGO, Jasper, IL
Built 1953 Load: 24.3 t ADT: 175
TR-266
FairOver: DRAINAGE DITCH
2.2 MI NW ST MARIE, Jasper, IL
Built 1909 Load: 24.3 t ADT: 50
FAS-707
FairOver: SANDY CREEK
1.4 MI E LATONA, Jasper, IL
Built 1909 Load: 24.3 t ADT: 400
TR-240
FairOver: DRAINAGE DITCH
2 MI NW STE MARIE, Jasper, IL
Built 1909 Load: 24.3 t ADT: 50
TR-492
FairOver: PUNCHEON CREEK
2.5 MI NNW BLUFORD, Jefferson, IL
Built 1909 Load: 24.3 t ADT: 100
TR 90-C
FairOver: A STREAM
SEC 12 T6N R13W, Jersey, IL
Built 1960 Load: 24.3 t ADT: 275
SO.ELMOVILLE ROAD
FairOver: N FORK PLUM RIVER
6 MILES S STOCKTON, Jo Daviess, IL
Built 1934 Load: 24.3 t ADT: 50
GROEZINGER ROAD
FairOver: PLUM RIVER
5 MI S STOCKTON, Jo Daviess, IL
Built 1927 Load: 24.3 t ADT: 75
TOWNSHIP ROAD NO.
FairOver: MENOMINEE RIVER
3M NW OF MENOMINEE, Jo Daviess, IL
Built 1925 Load: 24.3 t ADT: 50
TOWNSHIP ROAD NO.
FairOver: IRISH HOLLOW CREEK
5 MI W ELIZABETH, Jo Daviess, IL
Built 1922 Load: 24.3 t ADT: 75
TOWNSHIP ROAD NO 8
FairOver: SNIPE HOLLOW BR
2 MI NW ELIZABETH, Jo Daviess, IL
Built 1920 Load: 24.3 t ADT: 350
TOWNSHIP ROAD NO 1
FairOver: SNIPE HOLLOW BRANCH
2.5 MI NW ELIZABETH, Jo Daviess, IL
Built 1921 Load: 24.3 t ADT: 75
TOWNSHIP RD NO 216
FairOver: PLUM RIVER
2 M NW PLEASANT VLY, Jo Daviess, IL
Built 1926 Load: 24.3 t ADT: 100
TOWNSHIP RD NO 229
FairOver: DAVIS CREEK
3 MI NE PLEASANT VLY, Jo Daviess, IL
Built 1910 Load: 24.3 t ADT: 50
CH 15
FairOver: BR OF HELLS BR
5 MI N WOODBINE, Jo Daviess, IL
Built 1953 Load: 24.3 t ADT: 250
CH 17
FairOver: BR LITTLE RUSH CR
3 MI E HANOVER, Jo Daviess, IL
Built 1933 Load: 24.3 t ADT: 100
GALENA BLVD
FairOver: FOX RIVER, W CHANNEL
STOLP ISLAND, Kane, IL
Built 1926 Load: 24.3 t ADT: 11,200
GALENA BLVD
FairOver: FOX RIVER, E CHANNEL
STOLP ISLAND, Kane, IL
Built 1910 Load: 24.3 t ADT: 11,200
W. COUNTY LINE RD
FairOver: YOUNG'S CREEK
3.5 MI S MAPLE PARK, Kane, IL
Built 1931 Load: 24.3 t ADT: 2,500
BENTON STREET
FairOver: FOX RIVER E. BRANCH
300 FT W ILL RTE 25, Kane, IL
Built 1924 Load: 24.3 t ADT: 2,950
BENTON STREET
FairOver: FOX RIVER W. BRANCH
1200 FT W ILL RTE 25, Kane, IL
Built 1924 Load: 24.3 t ADT: 2,950
NORTH AV
FairOver: FOX RIVER
900 FT W ILL RTE 25, Kane, IL
Built 1926 Load: 24.3 t ADT: 6,650
CH 8
FairOver: EXLINE SL
.1 W ST. GEORGE, Kankakee, IL
Built 1955 Load: 24.3 t ADT: 1,900
CH 8
FairOver: FARR CR
1.4 MI E ST.GEORGE, Kankakee, IL
Built 1950 Load: 24.3 t ADT: 1,900
TR 186
FairOver: CANAVAN SLOUGH
0.75 MI SW WHITAKER, Kankakee, IL
Built 1960 Load: 24.3 t ADT: 50
CH 25
FairOver: REDDICK RUN
.8 MI E REDDICK, Kankakee, IL
Built 1956 Load: 24.3 t ADT: 300
Whitewillow Road
FairOver: Valley Run Creek
1.2 Mi W of 47, Kendall, IL
Built 1970 Load: 24.3 t ADT: 150
FAXON RD/MS 3210
FairOver: ROB ROY CK
1 MI W OF CANNONBALL, Kendall, IL
Built 1976 Load: 24.3 t ADT: 550
TR 51
FairOver: FOREMAN CREEK
NW-35-T13NRS3E, Knox, IL
Built 1900 Load: 24.3 t ADT: 75
TR 159
FairOver: CALDWELL CREEK
NW-3-T11NR4E, Knox, IL
Built 1900 Load: 24.3 t ADT: 25
OAK RUN ROAD
FairOver: TRIB TO SPOON LAKE
SE-34-T12NR3E, Knox, IL
Built 1970 Load: 24.3 t ADT: 500
OAK RUN ROAD-TR 50
FairOver: SPOON LAKE OVERFLOW
SE-11-T11NR3E, Knox, IL
Built 1970 Load: 24.3 t ADT: 375
COUNTY HIGHWAY 37
FairOver: TRIB.S.HENDERSON CRK
SE-18-T12NR1E, Knox, IL
Built 1900 Load: 24.3 t ADT: 350
Oak Knoll Road
FairOver: Flint Creek
.1M E of Ridge Rd., Lake, IL
Built 1926 Load: 24.3 t ADT: 225
PORT CLINTON RD.
FairOver: S.BR.INDIAN CREEK
1.5M W OF US 45, Lake, IL
Built 1956 Load: 24.3 t ADT: 1,150
TR-3
FairOver: INDIAN CREEK
N 48TH E 1210, LaSalle, IL
Built 1936 Load: 24.3 t ADT: 25
TR 332-A
FairOver: PRAIRIE CREEK
E 20TH N 1390, LaSalle, IL
Built 1938 Load: 24.3 t ADT: 25
TR 402
FairOver: WOLF CREEK
E 24TH N 1460, LaSalle, IL
Built 1946 Load: 24.3 t ADT: 50
TR 463
FairOver: TRIB VERMILION R
N 2053 RD E 1175, LaSalle, IL
Built 1924 Load: 24.3 t ADT: 75
TR-456
FairOver: NETTLE CREEK
E28TH N3135, LaSalle, IL
Built 1973 Load: 24.3 t ADT: 75
CO RD 5
FairOver: BR WOLF CREEK
1875 N 17TH, LaSalle, IL
Built 1940 Load: 24.3 t ADT: 1,150
TR 523
FairOver: OTTER CREEK
N 15TH E 2090, LaSalle, IL
Built 1952 Load: 24.3 t ADT: 400
Showing 5,351-5,400 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |