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
US 51
GoodOver: DRAINAGE DITCH
SCL OF DOWELL, Jackson, IL
Built 2017 Load: 44.7 t ADT: 6,000
FAS 1919
GoodOver: DRURY CREEK
NE CORN.SEC 9-10-1, Jackson, IL
Built 1977 Load: 44.7 t ADT: 1,300
IL 38
GoodOver: RR - UP
0.1 M E OF KAUTZ RD, Kane, IL
Built 2014 Load: 44.7 t ADT: 30,500
FRENCH ROAD
GoodOver: BURLINGTON CREEK
0.9 MI S ILL 72, Kane, IL
Built 2015 Load: 44.7 t ADT: 1,800
ILL 17
GoodOver: BREWSTER RUN
1.27 MI W OF ILL 47, Livingston, IL
Built 1973 Load: 44.7 t ADT: 3,350
ILL 23
GoodOver: STREAM
1.60 MI N OF I-55, Livingston, IL
Built 1977 Load: 44.7 t ADT: 2,900
TR 41D / 2800N
GoodOver: MUD CREEK
4.2 mi SE Blackstone, Livingston, IL
Built 2020 Load: 44.7 t ADT: 75
TR 236 Pin Oak Roa
GoodOver: Silver Creek
4 Mi NW Marine, Madison, IL
Built 2020 Load: 44.7 t ADT: 50
EDGEWOOD ROAD
GoodOver: RAT CREEK
0.2 W IL 31, McHenry, IL
Built 1954 Load: 44.7 t ADT: 4,750
I-74 EB
GoodOver: LITTLE KICKAPOO CR
1.1 MI E OF US 51, McLean, IL
Built 1968 Load: 44.7 t ADT: 9,500
I-74 WB
GoodOver: LITTLE KICKAPOO CR
1.1 MI E OF US 51, McLean, IL
Built 1968 Load: 44.7 t ADT: 9,500
ILL 9
GoodOver: MACKINAW CREEK
16.28 MI E BUSN 55, McLean, IL
Built 2017 Load: 44.7 t ADT: 2,100
TR 4
GoodOver: BRANCH SUGAR
5.6 MI NW MCLEAN, McLean, IL
Built 2018 Load: 44.7 t ADT: 75
IL 267
GoodOver: SANDY CREEK
.6M S I72/US36 INT, Morgan, IL
Built 2006 Load: 44.7 t ADT: 4,100
FAU 9181 SUMMIT AV
GoodOver: HARDING DITCH
0.7 M E JCT ILL 111, St. Clair, IL
Built 1957 Load: 44.7 t ADT: 1,900
W CLAY RD
GoodOver: PLUM CREEK BRANCH
0.60 MI W SO KENT RD, Stephenson, IL
Built 1977 Load: 44.7 t ADT: 25
NEW US 51
GoodOver: LITTLE CREEK
2 MI NW OF FAS 2936, Union, IL
Built 1998 Load: 44.7 t ADT: 2,900
IL 1 US 150 (FAP 3
GoodOver: LITTLE VERMILION RIV
.3 MI S GEORGETOWN, Vermilion, IL
Built 2006 Load: 44.7 t ADT: 4,000
FAS 496(CH 14)
GoodOver: N FORK VERMILION RIV
.2 MI W OF ROSSVILLE, Vermilion, IL
Built 1996 Load: 44.7 t ADT: 750
FAP 776 (IL 242)
GoodOver: FISH SLOUGH
3.5 MI S WAYNE CITY, Wayne, IL
Built 2015 Load: 44.7 t ADT: 1,350
FAP-332 (ILL-1)
GoodOver: FLANDERS CREEK
3 MI S CARMI, White, IL
Built 2014 Load: 44.7 t ADT: 3,700
1000 N
GoodOver: DRAINAGE DITCH
3.5 MI N OF EMMA, White, IL
Built 2018 Load: 44.7 t ADT: 25
FREEPORT RD
GoodOver: PENROSE CREEK
.06MI S.PENROSE RD, Whiteside, IL
Built 1999 Load: 44.7 t ADT: 1,800
US 6
GoodOver: MARLEY CREEK
0.3 M W OF COOK CO., Will, IL
Built 2020 Load: 44.7 t ADT: 14,200
MERIDIAN RD
GoodOver: ROCK CREEK
0.25 M S SIMPSON RD, Winnebago, IL
Built 1982 Load: 44.7 t ADT: 1,000
CH 7
GoodOver: BEAR CREEK
3.2 MI W MARCELLINE, Adams, IL
Built 1969 Load: 45.0 t ADT: 450
IL 78
GoodOver: STREAM
N. EDGE OF MT CARROL, Carroll, IL
Built 1992 Load: 45.0 t ADT: 1,150
SHATTUC RD/FAS 178
GoodOver: PRAIRIE CREEK
1.5MI N IL 161, Clinton, IL
Built 1988 Load: 45.0 t ADT: 2,250
5TH AVE
GoodOver: SILVER CREEK
0.6 M S IL 64, Cook, IL
Built 2012 Load: 45.0 t ADT: 11,800
US 6 (159TH) IL50
GoodOver: MIDLOTHIAN CR
.03 M W OF IL 50, Cook, IL
Built 2018 Load: 45.0 t ADT: 54,800
TR 4
GoodOver: ROCK CREEK
2.5 MI NW ALTAMONT, Effingham, IL
Built 2009 Load: 45.0 t ADT: 50
ILL RT 78
GoodOver: PLUM RIVER
.15MI N GROEZINER RD, Jo Daviess, IL
Built 2022 Load: 45.0 t ADT: 700
IL 176
GoodOver: DRAINAGE DITCH
0.8M W OF IL-59,US12, Lake, IL
Built 2012 Load: 45.0 t ADT: 18,400
ARLNTON HTS RD NB
GoodOver: BUFFALO CREEK
0.4 M N OF COOK CO, Lake, IL
Built 1969 Load: 45.0 t ADT: 12,350
CO RD 13
GoodOver: LITTLE VERMILION RV
E 5TH,N 3675, LaSalle, IL
Built 1938 Load: 45.0 t ADT: 425
FAS-805 (SBI-142)
GoodOver: BIG SLOUGH
.7 MI E ILL-1, Lawrence, IL
Built 2000 Load: 45.0 t ADT: 900
TR-69
GoodOver: BIRCH CREK
4 MI W PINKSTAFF, Lawrence, IL
Built 1985 Load: 45.0 t ADT: 35
IL 140
GoodOver: Cahokia Creek
2.5mi E of IL 159, Madison, IL
Built 2008 Load: 45.0 t ADT: 5,650
IL 3
GoodOver: PIASA CREEK
3.6 M S JCT 100-109, Madison, IL
Built 2011 Load: 45.0 t ADT: 3,500
FAS 2735
GoodOver: CAHOKIA CK
4MI E PRRTWN, Madison, IL
Built 1953 Load: 45.0 t ADT: 1,650
OLD CARPENTER/TR 1
GoodOver: TRIB TO CAHOKIA CR.
2.5MI SW CARRPENTER, Madison, IL
Built 2003 Load: 45.0 t ADT: 350
Kinlou Rd-FAS 2703
GoodOver: Trib to Skillet Fork
0.1 Mi W Clay Co Ln, Marion, IL
Built 2021 Load: 45.0 t ADT: 500
IL 23
GoodOver: KISHWAUKEE RV RELIEF
1.4 MI. N. US 20, McHenry, IL
Built 2009 Load: 45.0 t ADT: 6,450
MONTAGUE RD
GoodOver: CRANE GROVE CREEK
5 MI. N. FORRESTON, Ogle, IL
Built 1996 Load: 45.0 t ADT: 500
FAP 841-ILL 154
GoodOver: REESE CREEK
1.2 MI E OF US 51, Perry, IL
Built 1985 Load: 45.0 t ADT: 2,750
TR 105
GoodOver: WILDCAT CREEK
3.0 MI W MONTICELLO, Piatt, IL
Built 2004 Load: 45.0 t ADT: 225
FAS-1801
GoodOver: BONPAS CREEK
1.75 MI W BERRYVILLE, Richland, IL
Built 1957 Load: 45.0 t ADT: 150
IL 92
GoodOver: ZUMA CREEK
0.5 MI. W. OF JOSLIN, Rock Island, IL
Built 1994 Load: 45.0 t ADT: 5,600
ILL 142
GoodOver: RECTOR CREEK
1.6 MI S HAMILTON CO, Saline, IL
Built 1928 Load: 45.0 t ADT: 2,150
HARRISON AV
GoodOver: SUGAR CREEK
THAYER, Sangamon, IL
Built 1999 Load: 45.0 t ADT: 550
Showing 24,201-24,250 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 |