County profile · official public datasets

Woodford County, IL

223 public highway bridges tracked in the FHWA National Bridge Inventory: 26.9% rated Good, 62.8% Fair, 10.3% Poor.

223
Public bridges
26.9%
Good condition
10.3%
Poor condition

The verdict

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

Woodford County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

75th
of 102 on Poor share
10.3%
Poor-condition share
223
public highway bridges
1985
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.

Woodford County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Woodford County ranks #75 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.3%). Woodford County, Illinois contains 223 public highway bridges. Roughly 26.9% are rated “Good,” 62.8% “Fair,” and 10.3% “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

223

Public highway bridges in Woodford County

Good condition

26.9%

60 of 223 rated 7-9

Fair condition

62.8%

140 of 223 rated 5-6

Poor condition

10.3%

23 of 223 rated 4 or below

In-state Poor-share rank

#75 of 102

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

Condition distribution

Share of 223 NBI-tracked bridges by lowest applicable component rating.

Good
26.9% (60)
Fair
62.8% (140)
Poor
10.3% (23)

Woodford County's Poor-condition bridges carry 39,100 vehicle crossings a day

That is 11% of the county's reported daily bridge traffic on 10.3% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,700 crossings a day against 304 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 223 of 223 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

22.9% of Woodford County's bridges have passed the 50-year mark

51 of the 223 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 26.9% 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 36.3% of the county's Poor-condition bridge traffic

WB I-74 over MACKINAW RIVER, built 1964, carries 14,200 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 23-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 39,100 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Woodford County's bridges were built

223 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 55 of the county's bridges still in the inventory were built, which is 24.7% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1985, 6 years newer than the Illinois average of 1979.

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

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

The 5 Illinois counties nearest Woodford County in number of bridges, with their condition splits. Its 10.3% Poor share is the 5th-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1983 is in line with the group.

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

Bridge inventory size and condition shares for Woodford County and the 5 Illinois counties closest to it in inventory size
County Bridges Poor
Douglas County 232 1.3%
Clark County 230 4.8%
Jackson County 228 6.6%
McHenry County 227 20.3%
Woodford County (this page) 223 10.3%
White County 214 6.5%

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 Woodford 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 Woodford County, both outside Illinois so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IL (223 bridges here).

Similar average build year

Nearest mean year-built outside IL (1985 here).

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

All 223 Good 60 Fair 140 Poor 23

Fair-condition bridges (140)

ILL 89

Fair

Over: PARTRIDGE CREEK

2.95 MI N OF ILL 116, Woodford, IL

Built 1927 Load: 37.9 t ADT: 3,950

I-39/US 51 SB

Fair

Over: PANTHER CREEK

4.4 MI N OF US 24, Woodford, IL

Built 1989 Load: 37.9 t ADT: 8,100

I-39/US 51 NB

Fair

Over: PANTHER CREEK

4.4 MI N OF US 24, Woodford, IL

Built 1989 Load: 37.9 t ADT: 8,100

ILL 89

Fair

Over: SNAG CREEK

9.5 MI N OF ILL 116, Woodford, IL

Built 2009 Load: 37.9 t ADT: 3,150

CH 9 KAPPA RD

Fair

Over: 1-39 US 51

4.1 MI S OF US 24, Woodford, IL

Built 1989 Load: 38.2 t ADT: 550

TR 215

Fair

Over: RED RIVER

1925 EAST 700 NORTH, Woodford, IL

Built 1974 Load: 38.2 t ADT: 150

FAS 361 (CH 5)

Fair

Over: BR. PANTHER CREEK

0.1 MI. N 1100N RD, Woodford, IL

Built 2002 Load: 38.2 t ADT: 225

I-39 US 51 NB

Fair

Over: US 24 & TP&W RR

.5 MI W OF IL 251, Woodford, IL

Built 1989 Load: 38.6 t ADT: 9,350

ILL 117

Fair

Over: I-74

JCT I-74 & ILL 117, Woodford, IL

Built 1964 Load: 38.9 t ADT: 5,250

ILL 116

Fair

Over: WEST BR PANTHER CR

4.36 MI E OF ILL 117, Woodford, IL

Built 1984 Load: 38.9 t ADT: 2,900

FAS 359 ROANOKE RD

Fair

Over: I-39/US 51

3.5 MI N OF US24, Woodford, IL

Built 1990 Load: 38.9 t ADT: 400

TR 165

Fair

Over: I-39 US 51

1 MI N OF US 24, Woodford, IL

Built 1990 Load: 38.9 t ADT: 300

I-39 US 51 SB

Fair

Over: US 24 & TP&W RR

.5 MI W OF IL 251, Woodford, IL

Built 1989 Load: 38.9 t ADT: 9,350

EB I-74

Fair

Over: CONGERVILLE ROAD

3.85 MI E OF ILL 117, Woodford, IL

Built 1964 Load: 39.2 t ADT: 14,200

WB I-74

Fair

Over: CONGERVILLE ROAD

3.85 MI E OF ILL 117, Woodford, IL

Built 1964 Load: 39.2 t ADT: 14,200

TR.50

Fair

Over: PARTRIDGE CREEK

825 EAST 1675 NORTH, Woodford, IL

Built 1978 Load: 39.2 t ADT: 275

FAS 359 CH 4

Fair

Over: W BR PANTHER CREEK

0.5 MI E ROANOKE, Woodford, IL

Built 1987 Load: 39.5 t ADT: 650

CH 5

Fair

Over: PANTHER CR

2 MI NORTH OF SECOR, Woodford, IL

Built 1975 Load: 40.2 t ADT: 250

ILL 26

Fair

Over: PARTRIDGE CREEK

12.7 MI S OF ILL 17, Woodford, IL

Built 1992 Load: 41.1 t ADT: 2,550

ILL 89

Fair

Over: RICHLAND CREEK

5.35 MI N OF ILL 116, Woodford, IL

Built 1983 Load: 41.5 t ADT: 3,550

I 39/US 51

Fair

Over: UNNAMED STREAM

3.25 M S US 24, Woodford, IL

Built 1992 Load: 41.5 t ADT: 18,700

CH 3

Fair

Over: Trib Walnut Crk

0.43 MI N of CH 10, Woodford, IL

Built 1966 Load: 41.8 t ADT: 225

ILL 26

Fair

Over: DRY CREEK

8.9 MI S OF ILL 17, Woodford, IL

Built 1991 Load: 42.1 t ADT: 2,350

I-39/US 51 SB

Fair

Over: E BR PANTHER CR

1.9 MI N US 24, Woodford, IL

Built 1989 Load: 42.4 t ADT: 8,100

I-39/US 51 NB

Fair

Over: E BR PANTHER CR

1.9 MI N OF US 24, Woodford, IL

Built 1989 Load: 42.4 t ADT: 8,100

CH 2 (2200 N)

Fair

Over: I-39 US 51

.49 MI W OF IL 251, Woodford, IL

Built 1989 Load: 43.7 t ADT: 875

FAS 267 (CH 20)

Fair

Over: Mole Creek

0.25 MI N CH 14, Woodford, IL

Built 2014 Load: 43.7 t ADT: 150

FAS 2370(IL 26)

Fair

Over: BLUE CREEK

S Edge of Spring Bay, Woodford, IL

Built 2010 Load: 44.1 t ADT: 3,500

FAP673 ILL 116

Fair

Over: I-39 US 51

8 MI N OF US 24, Woodford, IL

Built 1990 Load: 44.4 t ADT: 1,900

US 24

Fair

Over: WALNUT CREEK

0.5 MI W OF ILL 117, Woodford, IL

Built 1963 Load: 45.7 t ADT: 7,150

ILL 26

Fair

Over: RICHLAND CREEK

10.18 MI S OF ILL 17, Woodford, IL

Built 1992 Load: 46.3 t ADT: 2,550

IL 251 FAS 1360

Fair

Over: PANTHER CREEK

3.4 MI S OF IL 116, Woodford, IL

Built 2009 Load: 47.0 t ADT: 1,250

I 39/US 51

Fair

Over: UNNAMED STREAM

1.25 MI S OF US 24, Woodford, IL

Built 1992 Load: 47.0 t ADT: 18,700

IL 251

Fair

Over: EAST PANTHER CREEK

6.45 MI S OF ILL 116, Woodford, IL

Built 2011 Load: 48.3 t ADT: 1,750

I 39/US 51

Fair

Over: E BRANCH PANTHER CK

2.5 MI N OF US 24, Woodford, IL

Built 1992 Load: 48.6 t ADT: 16,200

IL 117

Fair

Over: WALNUT CR

1.26 MI S OF US 24, Woodford, IL

Built 2005 Load: 48.9 t ADT: 8,700

ILL 26

Fair

Over: BLALOCK CREEK

14.75 MI S OF ILL 17, Woodford, IL

Built 1991 Load: 52.2 t ADT: 2,800

US 24

Fair

Over: PANTHER CREEK

4.2 MI W OF I39/US51, Woodford, IL

Built 1948 Load: 53.8 t ADT: 4,050

ILL 116

Fair

Over: INTERMITTENT STREAM

2.4 MI E OF ILL 89, Woodford, IL

Built 1959 Load: 63.8 t ADT: 4,100

TR 4

Fair

Over: BLUE CR

1MI E. BAYVIEW GARD., Woodford, IL

Built 1990 Load: 68.4 t ADT: 550

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

Related

Browse all → | Rankings →
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.