County profile · official public datasets

Will County, IL

649 public highway bridges tracked in the FHWA National Bridge Inventory: 43.1% rated Good, 46.4% Fair, 10.5% Poor.

649
Public bridges
43.1%
Good condition
10.5%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Will County posts a higher-than-median Poor-condition share among rated counties in the state across large county bridge inventory.

76th
of 102 on Poor share
10.5%
Poor-condition share
649
public highway bridges
1983
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Will County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Will County ranks #76 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.5%). Will County, Illinois contains 649 public highway bridges. Roughly 43.1% are rated “Good,” 46.4% “Fair,” and 10.5% “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.

Total bridges

649

Public highway bridges in Will County

Good condition

43.1%

280 of 649 rated 7-9

Fair condition

46.4%

301 of 649 rated 5-6

Poor condition

10.5%

68 of 649 rated 4 or below

In-state Poor-share rank

#76 of 102

Among Illinois counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 649 NBI-tracked bridges by lowest applicable component rating.

Good
43.1% (280)
Fair
46.4% (301)
Poor
10.5% (68)

Will County's Poor-condition bridges carry 825,585 vehicle crossings a day

That is 13% of the county's reported daily bridge traffic on 10.5% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 12,141 crossings a day against 7,646 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 647 of 649 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

33% of Will County's bridges have passed the 50-year mark

214 of the 649 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 43.1% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 12.9% of the county's Poor-condition bridge traffic

I- 55 over IL 53, built 1980, carries 106,200 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 68-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 825,585 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Will County's bridges were built

649 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2000s, when 132 of the county's bridges still in the inventory were built, which is 20.3% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1983) matches the Illinois average (1979).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Will County compares with Illinois's closest counties by inventory size

The 5 Illinois counties nearest Will County in number of bridges, with their condition splits. Its 10.5% Poor share is the 4th-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1980 is in line with the group.

Showing the 5 closest of 101 Illinois counties eligible for comparison.

Bridge inventory size and condition shares for Will County and the 5 Illinois counties closest to it in inventory size
County Bridges Poor
Champaign County 727 8.7%
Will County (this page) 649 10.5%
McLean County 624 2.9%
Livingston County 579 8.3%
Iroquois County 570 14.4%
LaSalle County 528 12.3%

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Will County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Will County, both outside Illinois so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IL (649 bridges here).

Similar average build year

Nearest mean year-built outside IL (1983 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 649 Good 280 Fair 301 Poor 68

Good-condition bridges (280)

OAKLAND AVENUE

Good

Over: TRIB. A DES PLAINES

.1M S OF CANTON FARM, Will, IL

Built 1989 Load: 32.4 t ADT: 2,850

PFEIFFER RD

Good

Over: HICKORY CR.

FRANKFORT, Will, IL

Built 2005 Load: 32.4 t ADT: 1,300

WASHINGTON STREET

Good

Over: SPRING CREEK

0.4 M E OF US 6, Will, IL

Built 2015 Load: 32.4 t ADT: 3,600

W MILLDSALE RD

Good

Over: UNION PACIFIC RR

2MI W OF IL 53, Will, IL

Built 2009 Load: 32.4 t ADT: 4,600

MCDONOUGH ST

Good

Over: ROCK RUN CREEK

JUST SO OF HOUBOLT, Will, IL

Built 1979 Load: 32.4 t ADT: 2,900

ESSINGTON ROAD

Good

Over: SUNNYLAND DRAIN CHAN

100 S HENNEPIN DR, Will, IL

Built 2010 Load: 32.4 t ADT: 16,800

BARNEY DRIVE

Good

Over: TRIBUTARY ROCK RUN

0.3MI N JEFFERSON ST, Will, IL

Built 2011 Load: 32.4 t ADT: 3,600

GARDNER ST

Good

Over: HICKORY CREEK

.1M S OFI80, Will, IL

Built 1996 Load: 32.4 t ADT: 3,600

Georgias Way

Good

Over: Trib to Hickory Crk

0.06 M E of Marley R, Will, IL

Built 2016 Load: 32.4 t ADT: 25

FOURTH AVE

Good

Over: HICKORY CREEK

0.4 MI E OF RICHARD, Will, IL

Built 2005 Load: 32.4 t ADT: 3,300

DIVISION ST

Good

Over: IL & MICH CANAL

480W OF STATE ST., Will, IL

Built 2014 Load: 32.4 t ADT: 2,750

Thorn Creek Drive

Good

Over: Thorn Creek

75ft S of Brookside, Will, IL

Built 2013 Load: 32.4 t ADT: 175

BOOK ROAD

Good

Over: CLOW CREEK

5 MI NNE OFPLAINFIEL, Will, IL

Built 1995 Load: 32.4 t ADT: 5,950

LOCKPORT RD

Good

Over: LILY CACHE CREEK

.25M W OF I55, Will, IL

Built 2002 Load: 32.4 t ADT: 6,600

PASTORAL DR

Good

Over: WEST NORMAN DRAIN

2.1M W OF IL59, Will, IL

Built 2002 Load: 32.4 t ADT: 500

BLAKEY DR

Good

Over: WEST NORMAN DRAIN

2.0M W OF IL59, Will, IL

Built 1998 Load: 32.4 t ADT: 850

HUNT CLUB LN

Good

Over: RETENTION POND

IL126 2M NE OF IL59, Will, IL

Built 2000 Load: 32.4 t ADT: 750

AIRPORT RD

Good

Over: MINK CREEK

.65M W OF WEBER RD, Will, IL

Built 2004 Load: 32.4 t ADT: 12,000

BROOKSIDE GLEN DRI

Good

Over: UNION DRAINAGE DITCH

0.50 MI W 80TH AV, Will, IL

Built 1998 Load: 32.4 t ADT: 1,550

CARILLON LAKES DR

Good

Over: MINK CREEK TRIBUTARY

140 FT S RENWINCK RD, Will, IL

Built 2001 Load: 32.4 t ADT: 800

IRONWOOD DR

Good

Over: HICKORY CREEK TRIB

0.5 MI N. OF US 30, Will, IL

Built 2015 Load: 32.4 t ADT: 400

FAU-8500 BaselineR

Good

Over: Unnamed Tributary

0.4 M N of Arsenal, Will, IL

Built 2010 Load: 32.4 t ADT: 8,900

W. DIVISION ST.

Good

Over: BNSF RY & DEEP RUN CREEK

LOCKPORT IL, Will, IL

Built 2001 Load: 32.4 t ADT: 50

GEORGE WASHINGTON

Good

Over: CREEK

20953 W HOFF RD ELWOOD, Will, IL

Built 2010 Load: 32.7 t ADT: 5

CEDAR RD

Good

Over: I- 80

0.5 M S OF I-355, Will, IL

Built 2007 Load: 33.0 t ADT: 11,200

BRUCE RD

Good

Over: I-355

1.1M S OF DIVISION, Will, IL

Built 2007 Load: 33.0 t ADT: 3,850

GOODENOW ROAD

Good

Over: BR. OF PLUM CREEK

0.14 MI W OF IL-1, Will, IL

Built 2019 Load: 33.0 t ADT: 4,600

RENWICK RD

Good

Over: MINK CREEK

1.1 MI WEST WEBER RD, Will, IL

Built 1972 Load: 33.4 t ADT: 14,900

US 52

Good

Over: ROCK RUN CREEK

1.5 M E OF IL 59, Will, IL

Built 1992 Load: 34.3 t ADT: 19,700

Danne Road (TR 221

Good

Over: Branch Plum Creek

0.7 M E of Klemme Rd, Will, IL

Built 2020 Load: 34.7 t ADT: 525

STELLAR LN

Good

Over: RETENTION POND

1.3M E IL59 OFF 127T, Will, IL

Built 2003 Load: 34.7 t ADT: 75

I- 55 EAST FRNT RD

Good

Over: SUNNYLAND DRAIN

1.8 M S OF US 30, Will, IL

Built 1956 Load: 35.0 t ADT: 2,800

MILLER AV.

Good

Over: HICKORY CREEK

.6 MI E RICHARD ST, Will, IL

Built 1935 Load: 35.0 t ADT: 1,400

VAN DYKE RD

Good

Over: WEST NORMAN DRAIN

.52M SO OF 135TH, Will, IL

Built 1997 Load: 35.3 t ADT: 5,500

I- 80 EB TO I-355

Good

Over: I- 80

0.65 M S OF US-6, Will, IL

Built 2007 Load: 35.6 t ADT: 6,500

CEDAR RD

Good

Over: LONG RUN CR

0.5 MI N OF 143RD ST, Will, IL

Built 1986 Load: 35.6 t ADT: 650

PLAINFIEL_NAPERVIL

Good

Over: DUPAGE RIVER

0.6M N OF 111TH ST, Will, IL

Built 2003 Load: 36.0 t ADT: 14,200

WOLF RD

Good

Over: HICKORY CREEK TRIB

0.7 M N OF US 30, Will, IL

Built 1995 Load: 36.3 t ADT: 10,800

143RD ST

Good

Over: I-355

.5M S OF IL171, Will, IL

Built 2007 Load: 36.6 t ADT: 4,675

ST FRANCIS ROAD

Good

Over: UNION DITCH

1.2 MI E US-45, Will, IL

Built 1984 Load: 36.9 t ADT: 8,450

95TH STREET

Good

Over: DUPAGE RIVER

1.16M SE PLAIN-NAPRD, Will, IL

Built 2014 Load: 37.3 t ADT: 9,650

Cherry Hill Rd

Good

Over: Jackson Branch

0.6 MI S of US 52, Will, IL

Built 2021 Load: 37.3 t ADT: 775

KENNEDY ROAD

Good

Over: S BR ROCK CREEK

3.5 MI E IL-50, Will, IL

Built 2000 Load: 37.3 t ADT: 100

US 45

Good

Over: HICKORY CREEK

50 FT N US-30, Will, IL

Built 1999 Load: 37.6 t ADT: 33,700

151ST ST.

Good

Over: I-355

1M N OF IL7, Will, IL

Built 2007 Load: 37.9 t ADT: 3,400

Klemme Road

Good

Over: Plum Creek

.1 M S. of Exchange, Will, IL

Built 2017 Load: 37.9 t ADT: 2,400

W. BRUNS RD.

Good

Over: TRIB PRAIRIE CREEK

.25M E CEDAR RD, Will, IL

Built 2003 Load: 37.9 t ADT: 300

MANHATTAN-MONEE RD

Good

Over: I- 57

3M S OF COOK CO LINE, Will, IL

Built 2009 Load: 37.9 t ADT: 11,800

CORNING ROAD

Good

Over: S. BR ROCK CREEK

0.6 M.E OF CICEROAVE, Will, IL

Built 1900 Load: 37.9 t ADT: 50

MAIN ST

Good

Over: IC RR

0.1 M E IL-50(MONEE), Will, IL

Built 1996 Load: 37.9 t ADT: 225

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

Related

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

Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.