Grundy County, IL
269 public highway bridges
Grundy County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Grundy County, Illinois contains 269 public highway bridges. Roughly 38.3% are rated “Good,” 27.1% “Fair,” and 24.2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (269)
FAI 55 NB
UnknownOver: MAZON RIVER @ TR 125
4.1 MI S OF REED RD, Grundy, IL
FAI 55 SB
UnknownOver: MAZON RIVER @ TR 125
4.1 MI S OF REED RD, Grundy, IL
Nettle Cr Rd CH 61
UnknownOver: FAI 80
1 M W of Seneca Int, Grundy, IL
TWP RD TR 70
UnknownOver: FAI 80
5.20 MI W ILL 47, Grundy, IL
Saratoga Rd / TR 8
UnknownOver: FAI 80
3.19 MI W OF ILL 47, Grundy, IL
Ashton Rd / TR 106
UnknownOver: FAI 80
2.21 MI W ILL 47, Grundy, IL
Brown Rd / TR 150
UnknownOver: FAI 80
4.48 MI E OF ILL 47, Grundy, IL
Pioneer Rd / TR 78
UnknownOver: FAI 80
4.20 MI W OF ILL 47, Grundy, IL
WABENA ST-MINOOKA
UnknownOver: FAI 80
0.5 M E MINOOKA INT, Grundy, IL
TR-110
UnknownOver: FAI-55
0.32 MI N LIV CO LN, Grundy, IL
TR 155
UnknownOver: I55, RT 66 & ICG RR
3 MI SW OF GARDNER, Grundy, IL
ILL 47
UnknownOver: ARMSTRONG & B & O RR
.57 S OF US 6 WEST, Grundy, IL
ILL 47
UnknownOver: BUCHANAN ST
ILL 47 IN MORRIS, Grundy, IL
FAS 272
UnknownOver: FAI 55
2.51 M S OF REED RD, Grundy, IL
FAS 299/REED RD.
UnknownOver: I-55
0.1 MI S WILL CO LN, Grundy, IL
TR 182
UnknownOver: FAI 55
4.79 MI S OF REED RD, Grundy, IL
FAS 292/GARDNER RD
UnknownOver: I 55
GARD. RD INTERCHANGE, Grundy, IL
ILL 47
UnknownOver: I 80
INTER I80 & ILL47, Grundy, IL
ASHLEY RD/FAU 5974
UnknownOver: I-80
1.24 MI E OF IL 47, Grundy, IL
FAP 623 (AT OR 623
UnknownOver: I-80 EB & WB
SENECA JUNCTION, Grundy, IL
BRISBIN RD (FAU 40
UnknownOver: FAI 80
3.72 MI E OF ILL 47, Grundy, IL
MINOOKA RD / CH 16
UnknownOver: I-80
2.56 M W Minooka Int, Grundy, IL
Lisbon Rd (FAU 596
UnknownOver: I-80
0.70 mi W of IL 47, Grundy, IL
IL 47
UnknownOver: I-55
IL47/I-55Interchange, Grundy, IL
EJ&E RR
UnknownOver: RIDGE RD/FAU384
0.66 MI S I-80, Grundy, IL
CRI&P RR
UnknownOver: LISBON ST
CRI&P RR OV LISBON S, Grundy, IL
E J & E RAILROAD
UnknownOver: FAI 80
0.41 M E MINOOKA INT, Grundy, IL
E.J.& E. RR
UnknownOver: MONDAMIN/FAU 400
AUX SABLE SEC 1, Grundy, IL
TR-58 BUFFALO RD
FairOver: WAUPECON CR
.5 M S GRAND RIDGE R, Grundy, IL
TR 3B MINOOKA ROAD
FairOver: SARATOGA CREEK
0.36 MI E LISBON RD, Grundy, IL
CAMPUS ROAD
FairOver: TRIB TO MAZON RIVER
0.2 MI S TR 159, Grundy, IL
CAMPUS ROAD
FairOver: E FK MAZON RIV
0.02 MI S TR 165, Grundy, IL
TYNAN ROAD CH C41
FairOver: MAZON RIVER
0.45 N. Bracville Rd, Grundy, IL
TR-103 O'MALLEY RD
FairOver: TRIB TO HOG RUN
.05 MI E BENNETT RD, Grundy, IL
TR 107 WAUPECAN RD
FairOver: TRIB TO HOG RUN
.25 MI E KINSMAN RD, Grundy, IL
O'MALLEY RD TR-103
FairOver: BILLS RUN
.27 MI W BUFFALO RD, Grundy, IL
RICE RD CH 15
FairOver: TRIB TO MAZON RIVER
0.2 MI E HALPIN ROAD, Grundy, IL
OLD STAGE RD CH 28
FairOver: I&M CANAL
.13 MI W NET SCH RD, Grundy, IL
LA SALLE RD TR-2
FairOver: HOG RUN
.1 MI S WAUPECAN RD, Grundy, IL
JOHNNY RUN ROAD
FairOver: JOHNNY RUN
0.1 MI N GOODFARM RD, Grundy, IL
SWELL RD TR 40
FairOver: JOHNNY RUN
.2 MI N RANSOM RD, Grundy, IL
TR-49 (STOCKDALE R
FairOver: O'BRIEN RUN
.20 MI E TR 70, Grundy, IL
TR120 OLDMAZON RD
FairOver: MURRAY SLUICE
.81 MI S GR RIDGE RD, Grundy, IL
GOODFARM RD
FairOver: MURRAY SLUICE
0.05 MI E BUFFALO RD, Grundy, IL
TR 78
FairOver: W FORK OF NETTLE CRK
.8 MI S OF NELSON RD, Grundy, IL
TR-3B MINOOKA RD
FairOver: TRIB TO AUX SABLE CR
.38 MI W BRISBIN RD, Grundy, IL
TR 71 SHABBONA RD
FairOver: TRIB TO BILLS RUN
.24 MI E SOUTHMOR RD, Grundy, IL
TR 89A/Indian Trai
FairOver: ARMSTRONG RUN
1.5 MI E OF ILL 170, Grundy, IL
MCARDLE RD-TR91A
FairOver: MAZON RIVER
3.3MI CBN HL TR91A, Grundy, IL
TR 180A Walleye Ro
FairOver: inlet off Goose Lake
0.14 MI N PEART RD., Grundy, IL
Read our methodology - how this data is sourced, computed, and verified.
Related
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.