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.

269
Total Bridges
38.3%
Good
27.1%
Fair
24.2%
Poor Condition

Condition Distribution

Good
38.3% (103)
Fair
27.1% (73)
Poor
24.2% (65)

All Bridges (269)

JOHNSON ST

Poor

Over: NETTLE CR

JOHNSON ST OV NET CR, Grundy, IL

Built 1971 Load: 30.8 t ADT: 800

STORM RD TR-180

Poor

Over: EAST FK MAZON RIVER

.33 MI S STONEWALL R, Grundy, IL

Built 1979 Load: 31.1 t ADT: 50

GORE RD. TR-41

Poor

Over: W. FK. NETTLE CR

0.35 MI W.ASHTON RD, Grundy, IL

Built 1990 Load: 31.4 t ADT: 425

TR-14 Nettle Crk R

Poor

Over: Trib To Nettle Crk

0.21 MI S OF TR 13, Grundy, IL

Built 1977 Load: 31.8 t ADT: 100

TR70 SCOTTSCHOOL R

Poor

Over: WEST FORK NETTLE CR

.18 MI S HOGE RD, Grundy, IL

Built 1981 Load: 32.1 t ADT: 225

TR 172 JUGTOWN RD

Poor

Over: CLAYPOOL DRAIN DITCH

.11 MI S WHITETIE RD, Grundy, IL

Built 1986 Load: 32.1 t ADT: 900

HIGGINS RD TR-130

Poor

Over: JOHNNY RUN

.41 MI N SPRING RD, Grundy, IL

Built 1977 Load: 32.1 t ADT: 125

TR 106 ASHTON RD

Poor

Over: E FK NETTLE CREEK

0.08 MI S NELSON RD, Grundy, IL

Built 1986 Load: 32.4 t ADT: 225

TR-110 DWIGHT RD

Poor

Over: JOHNNY RUN

.08 MI N MINE RD, Grundy, IL

Built 1981 Load: 32.4 t ADT: 150

GARDNER RD/FAS 292

Poor

Over: JOHNNY RUN

.36 MI W-BUFFALO RD, Grundy, IL

Built 1992 Load: 32.4 t ADT: 800

GOODFARM RD TR-155

Poor

Over: TRIB E FK MAZON RIV

.13 MI E HALPIN RD, Grundy, IL

Built 1980 Load: 32.4 t ADT: 50

TR 161 STONEWALL R

Poor

Over: TRIB E FK MAZON R

.06 MI W KANKAKEE RD, Grundy, IL

Built 1988 Load: 32.4 t ADT: 75

TR 155/GOODFARM RD

Poor

Over: E FORK MAZON RIVER

1 S SOUTH WILMINGTON, Grundy, IL

Built 1999 Load: 33.4 t ADT: 50

ARMSTRONG STREET

Poor

Over: I&M CANAL

150' E OF WASHINGTON, Grundy, IL

Built 1990 Load: 34.0 t ADT: 900

US 6

Poor

Over: AUX SABLE CR

4.9 M E OF ILL 47, Grundy, IL

Built 1969 Load: 35.0 t ADT: 7,050

FAS-292 Gardner Ro

Poor

Over: W Fork Mazon River

0.05M E Dwight Road, Grundy, IL

Built 1982 Load: 35.0 t ADT: 1,000

HOGE RD TR-13

Poor

Over: TRIB TO NETTLE CREEK

0.06 MI E OF CH 21, Grundy, IL

Built 1976 Load: 37.3 t ADT: 25

TR 2 LA SALLE RD

Poor

Over: TRIB TO JOHNNY RUN

.15 MI S SCULLY RD, Grundy, IL

Built 1985 Load: 37.9 t ADT: 25

KINSMAN ROAD

Poor

Over: WAUPECON CREEK

0.1 MI N BURKHART RD, Grundy, IL

Built 1948 Load: 39.2 t ADT: 300

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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.