County profile · official public datasets

Greene County, IL

162 public highway bridges tracked in the FHWA National Bridge Inventory: 51.9% rated Good, 42.6% Fair, 5.6% Poor.

162
Public bridges
51.9%
Good condition
5.6%
Poor condition

The verdict

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

Greene County posts a top-quartile lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 21%
lowest Poor share in state
5.6%
Poor-condition share
162
public highway bridges
1981
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.

Greene County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Greene County ranks #21 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.6%). Greene County, Illinois contains 162 public highway bridges. Roughly 51.9% are rated “Good,” 42.6% “Fair,” and 5.6% “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

162

Public highway bridges in Greene County

Good condition

51.9%

84 of 162 rated 7-9

Fair condition

42.6%

69 of 162 rated 5-6

Poor condition

5.6%

9 of 162 rated 4 or below

In-state Poor-share rank

#21 of 102

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

Condition distribution

Share of 162 NBI-tracked bridges by lowest applicable component rating.

Good
51.9% (84)
Fair
42.6% (69)
Poor
5.6% (9)

Greene County's Poor-condition bridges carry 7,685 vehicle crossings a day

That is 9.5% of the county's reported daily bridge traffic on 5.6% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 854 crossings a day against 489 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 162 of 162 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

27.8% of Greene County's bridges have passed the 50-year mark

45 of the 162 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 51.9% 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 61.8% of the county's Poor-condition bridge traffic

US 67 over MACOUPIN CREEK, built 1969, carries 4,750 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 9-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 7,685 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Greene County's bridges were built

162 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1980s, when 37 of the county's bridges still in the inventory were built, which is 22.8% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1981) matches the Illinois average (1979).

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

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

The 5 Illinois counties nearest Greene County in number of bridges, with their condition splits. Its 5.6% Poor share is the 2nd-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1981 is in line with the group.

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

Bridge inventory size and condition shares for Greene County and the 5 Illinois counties closest to it in inventory size
County Bridges Poor
Cumberland County 169 6.5%
Clay County 166 13.3%
Hamilton County 165 2.4%
Mercer County 163 6.7%
Bond County 162 8%
Greene County (this page) 162 5.6%

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

Similar inventory size

Nearest county inventories outside IL (162 bridges here).

Similar average build year

Nearest mean year-built outside IL (1981 here).

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

All 162 Good 84 Fair 69 Poor 9

Good-condition bridges (84)

Hillview Eldred Ro

Good

Over: CREEK

2.5 N ELDRED, Greene, IL

Built 1939 Load: 16.5 t ADT: 400

Hillview Eldred Ro

Good

Over: Shaffer Hollow Creek

0.51 N OF ELDRED, Greene, IL

Built 1940 Load: 19.1 t ADT: 400

FAS 745

Good

Over: HODGES CREEK

2 MI E OF ROCKBRIDGE, Greene, IL

Built 1970 Load: 24.3 t ADT: 175

FAS 746

Good

Over: PROUGH BRANCH

2 MI E.OF KANE, Greene, IL

Built 1901 Load: 29.2 t ADT: 150

TR-160

Good

Over: SAND BRANCH

3 M SE CARROLLTON, Greene, IL

Built 1981 Load: 29.8 t ADT: 125

US 67

Good

Over: LINK BRANCH

1 MI S CARROLLTON, Greene, IL

Built 1952 Load: 31.1 t ADT: 5,000

TR 300

Good

Over: LICK CREEK

0.6 MI SW ATHVILE, Greene, IL

Built 1987 Load: 31.1 t ADT: 50

TR 288

Good

Over: APPLE CREEK

2.3 MI NW ATHVLLE, Greene, IL

Built 1987 Load: 31.1 t ADT: 25

US 67

Good

Over: DRAINAGE

AT SCOTT COUNTY LINE, Greene, IL

Built 2004 Load: 32.4 t ADT: 3,450

US 67

Good

Over: DRAINAGE

2 MI N OF ROODHOUSE, Greene, IL

Built 2004 Load: 32.4 t ADT: 3,450

US 67

Good

Over: S TRIB MACOUPIN CRK

.9 MI S MACOUPIN CR, Greene, IL

Built 1965 Load: 32.4 t ADT: 4,750

FAS 731 CH 2

Good

Over: APPLE CREEK

.5 MI E OF IL 267, Greene, IL

Built 2007 Load: 32.4 t ADT: 450

TR-27

Good

Over: TRIMLEY CREEK

2 MI NW WILMINGTON, Greene, IL

Built 1980 Load: 32.4 t ADT: 25

FAS 740-CH 6

Good

Over: MACOUPIN CREEK

5.5MI S 108 FAS740, Greene, IL

Built 1981 Load: 32.4 t ADT: 350

TR-167

Good

Over: CROOKED CREEK

1.5 MI SW WALKERVILL, Greene, IL

Built 1984 Load: 32.4 t ADT: 50

TR 101

Good

Over: SEMINARY CREEK

1.2 MI W WHITEHALL, Greene, IL

Built 1983 Load: 32.4 t ADT: 300

TR-173

Good

Over: WHITAKER CREEK

5 MI NE CARROLLTON, Greene, IL

Built 1984 Load: 32.4 t ADT: 50

FAS 744 CH 4

Good

Over: WHITAKER CREEK

2 MI E 67 FAS 744, Greene, IL

Built 1985 Load: 32.4 t ADT: 350

TR 217

Good

Over: STREAM

2 MI. S. GREENFIELD, Greene, IL

Built 1988 Load: 32.4 t ADT: 150

TR193

Good

Over: S. FORK WHITAKER CK

1625N-1280E, Greene, IL

Built 1989 Load: 32.4 t ADT: 50

TR 78

Good

Over: MACOUPIN CREEK

8 MI SE OF ELDRED, Greene, IL

Built 1988 Load: 32.4 t ADT: 25

TR 217

Good

Over: STREAM

2.8 MI SW GREENFIELD, Greene, IL

Built 1992 Load: 32.4 t ADT: 75

TR 266

Good

Over: MARKS CREEK

3.6 MI N ATHENSVILLE, Greene, IL

Built 1990 Load: 32.4 t ADT: 50

TR 221

Good

Over: DRAINAGE DITCH

4 MI SW HAYPRESS, Greene, IL

Built 1990 Load: 32.4 t ADT: 25

TR 74

Good

Over: HURRICANE CREEK

4.3 MI W. CARROLLTON, Greene, IL

Built 1992 Load: 32.4 t ADT: 50

TR 160

Good

Over: SAND CREEK

SW SEC 30 T1ON R11W, Greene, IL

Built 1993 Load: 32.4 t ADT: 125

TR 278

Good

Over: TRIB. TO TAYLOR CR.

3 MI W. GREENFIELD, Greene, IL

Built 1995 Load: 32.4 t ADT: 50

TR 226

Good

Over: BEAR CREEK

1 1/4 MI N. WRIGHTS, Greene, IL

Built 1997 Load: 32.4 t ADT: 50

CH-30

Good

Over: DRY BRANCH

1.6 MI. E. OF WOODY, Greene, IL

Built 1994 Load: 32.4 t ADT: 375

CH-9

Good

Over: Apple Creek

3 MI W. OF RT. 267, Greene, IL

Built 1999 Load: 32.4 t ADT: 150

TR 203

Good

Over: UNNAMED CREEK

1/2MI EAST ELDRED RD, Greene, IL

Built 1999 Load: 32.4 t ADT: 25

TR 70

Good

Over: TRIB APPLE CREEK

1.5MI N. IL 108, Greene, IL

Built 1999 Load: 32.4 t ADT: 75

TR 110

Good

Over: UNNAMED CREEK

5.2 MI SW CARROLLTON, Greene, IL

Built 1996 Load: 32.4 t ADT: 50

TR 282

Good

Over: TAYLOR CREEK

2.7MI SW ROCKBRIDGE, Greene, IL

Built 2002 Load: 32.4 t ADT: 25

TR-7

Good

Over: Trib Little Apple

2.5MI EAST OF RT 267, Greene, IL

Built 1999 Load: 32.4 t ADT: 25

FAS 732 CH 22

Good

Over: WOLF RUN CREEK

2150N;1350E, Greene, IL

Built 2000 Load: 32.4 t ADT: 250

TR 269

Good

Over: TAYLOR CREEK

5.5MI SW ROCKBRIDGE, Greene, IL

Built 2002 Load: 32.4 t ADT: 75

TR 196

Good

Over: BEAR CREEK

5.2 MI SE CARROLTON, Greene, IL

Built 2002 Load: 32.4 t ADT: 50

TR 267

Good

Over: LINKS BRANCH

950N;1330E, Greene, IL

Built 2002 Load: 32.4 t ADT: 50

TR 180

Good

Over: WOLF RUN CREEK

2300N;1475E, Greene, IL

Built 2003 Load: 32.4 t ADT: 50

TR 243

Good

Over: BR OF BEARCREEK

1175N:1725E, Greene, IL

Built 2004 Load: 32.4 t ADT: 25

TR 256A

Good

Over: SOUTH LICK CREEK

2250N;2000E, Greene, IL

Built 2003 Load: 32.4 t ADT: 75

TR 183

Good

Over: RUBICON CREEK

1 MI N GREENFIELD, Greene, IL

Built 2005 Load: 32.4 t ADT: 150

FAS 731

Good

Over: BIRCH CREEK

2550N;1650E, Greene, IL

Built 2006 Load: 32.4 t ADT: 550

TR 201

Good

Over: TAYLOR CREEK

2.5 E GREENFIELD, Greene, IL

Built 2007 Load: 32.4 t ADT: 225

TR 301

Good

Over: BOYER CREEK

5 MI W. OF OLD KANE, Greene, IL

Built 2007 Load: 32.4 t ADT: 50

TR 257

Good

Over: STREAM

2.4MI SW ELDRED, Greene, IL

Built 2007 Load: 32.4 t ADT: 25

TR 127

Good

Over: WOLF RUN CREEK

2.25M SE WHITEHALL, Greene, IL

Built 2010 Load: 32.4 t ADT: 10

TR 127

Good

Over: SEMINARY CREEK

2.6MI S WHITEHALL, Greene, IL

Built 2010 Load: 32.4 t ADT: 50

TR 251

Good

Over: Taylor Creek

1250N;2225E, Greene, IL

Built 2011 Load: 32.4 t ADT: 25

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.