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
E 19TH
FairOver: BR COVEL CREEK
E.19TH N.2360, LaSalle, IL
Built 1950 Load: 33.4 t ADT: 25
TR 166 B
FairOver: DIAMOND CR
E10TH RD N075, LaSalle, IL
Built 1979 Load: 33.4 t ADT: 25
CH-16 FAS-355
FairOver: SHORT POINT CREEK
1.75 MI N OF RT 116, Livingston, IL
Built 1919 Load: 33.4 t ADT: 1,000
TR 4A
FairOver: LONG POINT CREEK
2570 N, 100 E, Livingston, IL
Built 1960 Load: 33.4 t ADT: 50
TR 41C
FairOver: TRIB W F MAZON R
2335 E, 2800 N, Livingston, IL
Built 1940 Load: 33.4 t ADT: 25
TR 210
FairOver: FELKY SLOUGH
1965 N 2300 E, Livingston, IL
Built 1989 Load: 33.4 t ADT: 25
TR 288B
FairOver: NORTH FORK
3.0 MI W LATHAM, Logan, IL
Built 1975 Load: 33.4 t ADT: 100
IL 111
FairOver: MACOUPIN CREEK
7.87M S JCT IL 108, Macoupin, IL
Built 1931 Load: 33.4 t ADT: 900
ILL 16
FairOver: GILLESPIE LAKE CREEK
2.7 M W GILLESPIE, Macoupin, IL
Built 1937 Load: 33.4 t ADT: 2,350
TR 483
FairOver: SILVER CREEK
3.5 M E STAUNTON, Macoupin, IL
Built 1956 Load: 33.4 t ADT: 250
FAI 70 WB
FairOver: WENDELL BRANCH
1.6 M E FAI 55, Madison, IL
Built 1965 Load: 33.4 t ADT: 15,300
FAI 70 EB
FairOver: SILVER CREEK
2.3 M W ILL 4, Madison, IL
Built 1962 Load: 33.4 t ADT: 15,300
FAI 70 WB
FairOver: SILVER CREEK
2.3 M W ILL 4, Madison, IL
Built 1964 Load: 33.4 t ADT: 15,300
IL 3
FairOver: PHRR, ACPRR, Access Road
ARMY DEPOT RR YARD, Madison, IL
Built 1975 Load: 33.4 t ADT: 11,700
FAS 766/ FRUIT RD.
FairOver: SILVER CK
8.8 MI W GRANTFORK, Madison, IL
Built 1983 Load: 33.4 t ADT: 725
I-57 NB
FairOver: Abandoned M&IRR(UPRR)
.75 MI S SALEM INT, Marion, IL
Built 1968 Load: 33.4 t ADT: 9,650
I-57 SB
FairOver: Abandoned M&IRR(UPRR)
.75 MI S SALEM INT, Marion, IL
Built 1968 Load: 33.4 t ADT: 9,650
TR-165A
FairOver: SKILLET FORK
2 MI SE FORBES ST PK, Marion, IL
Built 1977 Load: 33.4 t ADT: 25
FAS 369 (TH-D12)
FairOver: CREEK
T29N-RIE-3PM SEC 16, Marshall, IL
Built 1920 Load: 33.4 t ADT: 125
IL 10
FairOver: CRANE CREEK
1.5 MI N EASTON, Mason, IL
Built 1925 Load: 33.4 t ADT: 550
COLLINS RD.
FairOver: N.BR.KISHWAUKEE RIV.
4.6M.W.OF WOODSTOCK, McHenry, IL
Built 1991 Load: 33.4 t ADT: 725
FAS 482 CH 36
FairOver: TIMBER CR
0.5 MIE FUNKS GROVE, McLean, IL
Built 1976 Load: 33.4 t ADT: 75
ILL 97
FairOver: TAR CREEK
.5 MI N OAKFORD, Menard, IL
Built 1938 Load: 33.4 t ADT: 1,750
ILL 123
FairOver: SANGAMON RIVER
.2MI E PETERSBURG, Menard, IL
Built 1985 Load: 33.4 t ADT: 4,800
TR 120
FairOver: GROVE CREEK
2.0MI NW GREENVIEW, Menard, IL
Built 1994 Load: 33.4 t ADT: 50
FAS 209-CH 14
FairOver: ELIZA CREEK
SE-30-T15NR5W, Mercer, IL
Built 1966 Load: 33.4 t ADT: 1,300
IL 16
FairOver: BIG 4 RESVR OVRFL
SCHRAM CITY 1M E WCL, Montgomery, IL
Built 1925 Load: 33.4 t ADT: 2,900
FAS 642 (CH 4)
FairOver: CRABAPPLE CREEK
6.5 MI E OF IL 32, Moultrie, IL
Built 1988 Load: 33.4 t ADT: 1,400
I-39 & US 51
FairOver: STREAM
1.75 MI S OF IL 64, Ogle, IL
Built 1981 Load: 33.4 t ADT: 29,600
SILVER CREEK ROAD
FairOver: SILVER CREEK
4.0 MI SE LEAF RIVER, Ogle, IL
Built 1982 Load: 33.4 t ADT: 50
TR 213A
FairOver: LITTLE GALUM CREEK
3 MI WEST ILL RT 13, Perry, IL
Built 1900 Load: 33.4 t ADT: 100
FAS1881-E PARK ST
FairOver: LITTLE MUDDY OVRFLOW
0.5 MI W FRKLN-PERRY, Perry, IL
Built 1997 Load: 33.4 t ADT: 900
ILL 48(FAP 760)
FairOver: CREEK
4 MI N ILL 47 EAST, Piatt, IL
Built 1931 Load: 33.4 t ADT: 1,250
US 54
FairOver: PLUM POINT SLOUGH
5.2M SW IL 96, Pike, IL
Built 1928 Load: 33.4 t ADT: 3,100
IL 104
FairOver: MARTIN CREEK
1.2M W IL 99, Pike, IL
Built 1934 Load: 33.4 t ADT: 950
FAS 604
FairOver: BUCKEYE CREEK
4.25 MI N NEBO, Pike, IL
Built 1994 Load: 33.4 t ADT: 725
CS 6030
FairOver: TRIB TO HODGES CREEK
OLMSTED, Pulaski, IL
Built 1988 Load: 33.4 t ADT: 300
FAS 858 (ROOTS RD)
FairOver: KASKASKIA RIVER
0.6 MI E OF ROOTS, Randolph, IL
Built 1960 Load: 33.4 t ADT: 375
IL 101
FairOver: LAMOINE R OVERFLOW
1.5M E IL 99, Schuyler, IL
Built 1984 Load: 33.4 t ADT: 300
TR 285
FairOver: CRANE CR
4.5 MI.S.RUSHVILLE, Schuyler, IL
Built 1975 Load: 33.4 t ADT: 50
I-72/US 36(EB)
FairOver: PLUM CREEK
2.6M E IL 100 INTCHG, Scott, IL
Built 1981 Load: 33.4 t ADT: 4,825
CH 3(FAS 642)
FairOver: LAKE SHELBYVILLE
2 MI E OF FINDLEY, Shelby, IL
Built 1967 Load: 33.4 t ADT: 1,850
FAU 9206-WATER ST
FairOver: Prairie duPont Canal
1.5M S ILL 157, St. Clair, IL
Built 1984 Load: 33.4 t ADT: 1,350
US 20 EB
FairOver: PECATONICA RIVER
NE OF FREEPORT, Stephenson, IL
Built 1982 Load: 33.4 t ADT: 6,800
FAS 512(CH 8)
FairOver: JORDAN CREEK
N OF FAIRMOUNT, Vermilion, IL
Built 1951 Load: 33.4 t ADT: 1,900
FAS 513(CH 18)
FairOver: JORDAN CREEK
1.1 MI S FAIRMOUNT, Vermilion, IL
Built 1953 Load: 33.4 t ADT: 850
TR 122
FairOver: HENDERSON CREEK
SE-15-T12NR2W, Warren, IL
Built 1977 Load: 33.4 t ADT: 25
FAI 64 WB
FairOver: RR(ABANDONED)
0.5 MI W US-45 INT, Wayne, IL
Built 1974 Load: 33.4 t ADT: 5,500
FAP-332 (ILL 1)
FairOver: STREAM
S EDGE CARMI, White, IL
Built 1985 Load: 33.4 t ADT: 9,150
MOLINE RD
FairOver: MEREDOSIA CREEK
ROCK ISLAND CO LINE, Whiteside, IL
Built 2009 Load: 33.4 t ADT: 1,600
Showing 10,401-10,450 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.