County profile · official public datasets

Gallatin County, IL

82 public highway bridges tracked in the FHWA National Bridge Inventory: 78% rated Good, 13.4% Fair, 8.5% Poor.

82
Public bridges
78%
Good condition
8.5%
Poor condition

The verdict

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

Gallatin 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.

61st
of 102 on Poor share
8.5%
Poor-condition share
82
public highway bridges
1984
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.

Gallatin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Gallatin County ranks #61 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.5%). Gallatin County, Illinois contains 82 public highway bridges. Roughly 78% are rated “Good,” 13.4% “Fair,” and 8.5% “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

82

Public highway bridges in Gallatin County

Good condition

78%

64 of 82 rated 7-9

Fair condition

13.4%

11 of 82 rated 5-6

Poor condition

8.5%

7 of 82 rated 4 or below

In-state Poor-share rank

#61 of 102

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

Condition distribution

Share of 82 NBI-tracked bridges by lowest applicable component rating.

Good
78% (64)
Fair
13.4% (11)
Poor
8.5% (7)

Gallatin County's Poor-condition bridges carry 6,595 vehicle crossings a day

That is 16.3% of the county's reported daily bridge traffic on 8.6% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 942 crossings a day against 307 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 81 of 82 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

22% of Gallatin County's bridges have passed the 50-year mark

18 of the 82 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 78% 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 56.1% of the county's Poor-condition bridge traffic

ILL 13 over NORTH FORK SALINE R, built 1964, carries 3,700 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 7-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 6,595 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Gallatin County's bridges were built

82 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1980s, when 16 of the county's bridges still in the inventory were built, which is 19.5% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1984, 5 years newer than the Illinois average of 1979.

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

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

The 5 Illinois counties nearest Gallatin County in number of bridges, with their condition splits. Its 8.5% Poor share is the 5th-lowest of these 6. Its average build year of 1984 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 Gallatin County and the 5 Illinois counties closest to it in inventory size
County Bridges Poor
Pope County 88 6.8%
Mason County 86 4.7%
Gallatin County (this page) 82 8.5%
Calhoun County 81 3.7%
Edwards County 79 7.6%
Cass County 77 19.5%

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

Similar inventory size

Nearest county inventories outside IL (82 bridges here).

Similar average build year

Nearest mean year-built outside IL (1984 here).

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

All 82 Good 64 Fair 11 Poor 7

All bridges (82)

THACKERS HOLLOW RO

Good

Over: POUNDS HOLLOW TRIB

SE OF LEAMINGTON, Gallatin, IL

Built 2007 Load: 32.4 t ADT: 25

ST. JOSEPH RD

Good

Over: STREAM

0.5 MI EAST RTE 1, Gallatin, IL

Built 2009 Load: 32.4 t ADT: 75

COTTONWOOD ROAD

Good

Over: WHITE OAK CREEK

SALINE-GALLATIN CL, Gallatin, IL

Built 2011 Load: 32.4 t ADT: 50

MILES CARNAHAN RD

Good

Over: COCKEREL BRANCH

0.8 MI W FAS 902, Gallatin, IL

Built 2010 Load: 32.4 t ADT: 50

HEAD LANE

Good

Over: UNNAMED TRIB TO OHIO

0.4 M S IL RT 13, Gallatin, IL

Built 2012 Load: 32.4 t ADT: 50

HOGAN CEMETERY RD

Good

Over: UNNAMED STREAM

1.2 MI SOUTH FAS 892, Gallatin, IL

Built 2011 Load: 32.4 t ADT: 75

RINGGOLD RD/CH15

Good

Over: UNNAMED TRIBTO OHIO

3.5MI S SHAWNEETOWN, Gallatin, IL

Built 2011 Load: 32.4 t ADT: 325

CAMPGROUND ROAD

Good

Over: CRAWFORD CREEK

.5M N RWAY/NWHAVENRD, Gallatin, IL

Built 2013 Load: 32.4 t ADT: 10

TR-162 (Rigsby Rd)

Good

Over: Trib Saline River

2MI S BOWLESVILLE, Gallatin, IL

Built 2016 Load: 32.4 t ADT: 75

FAS 902-FH 36

Good

Over: DRAINAGE DITCH

2 MI.SO.OF EQUALITY, Gallatin, IL

Built 1979 Load: 32.4 t ADT: 400

KEDRON RD

Good

Over: SUGARCAMP CREEK

4.0MI N LEAMINGTON, Gallatin, IL

Built 2018 Load: 36.3 t ADT: 10

C.H. 11 / F.A.S. 8

Good

Over: N. FK. Cypress Creek

4.25 MI N ILL 13, Gallatin, IL

Built 2018 Load: 36.9 t ADT: 1,100

TR 48A

Good

Over: TRIB N FORK SALINE R

1 MI N OF EQUALITY, Gallatin, IL

Built 1977 Load: 37.9 t ADT: 25

TR 128A-FARMER ROA

Good

Over: TRIB TO CANE CREEK

4 MI SE OMAHA, Gallatin, IL

Built 1998 Load: 38.6 t ADT: 25

ILL 1 FAP 782

Good

Over: EAGLE CREEK

GIBSONIA, Gallatin, IL

Built 1993 Load: 39.5 t ADT: 1,850

TR 149A

Good

Over: UNNAMED STREAM

NE CORP LIMIT STOWN, Gallatin, IL

Built 1980 Load: 39.5 t ADT: 225

ILL 13

Good

Over: STREAM

0.7M W OF ILL 1, Gallatin, IL

Built 1968 Load: 40.5 t ADT: 3,700

ILLINOIS 1

Good

Over: CANE CREEK

1 MI. SOUTH OF OMAHA, Gallatin, IL

Built 1978 Load: 40.8 t ADT: 1,400

TR 153

Good

Over: MILLRACE SLOUGH

2 MI NE OLD STOWN, Gallatin, IL

Built 1981 Load: 40.8 t ADT: 10

TR 208

Good

Over: BEAVER POND

2 MI S NEWHAVEN, Gallatin, IL

Built 1983 Load: 44.1 t ADT: 25

BIG HILL ROAD

Good

Over: RUNNING SLOUGH TRIB

3MI N OLD SHAWNEETOW, Gallatin, IL

Built 2008 Load: 46.3 t ADT: 100

ILL 13

Good

Over: MARKET ST.

OLD SHAWNEETOWN, Gallatin, IL

Built 2004 Load: 47.6 t ADT: 2,500

FAS 888

Good

Over: M.FORK CYPRESS CREEK

3.65 MI N ILL 13, Gallatin, IL

Built 2006 Load: 47.6 t ADT: 1,100

LEAMINGTON ROAD

Good

Over: ROBINETTE CREEK

0.8 MI E LEAMINGTON, Gallatin, IL

Built 2019 Load: 53.5 t ADT: 75

ILL 1

Good

Over: BEAVER CREEK

0.2 MI N HARDIN CO, Gallatin, IL

Built 2009 Load: 89.1 t ADT: 1,200

SBI 13 (UNMARKED)

Poor

Over: STREAM

1 MI W OF ILL 1, Gallatin, IL

Built 1920 Load: 14.6 t ADT: 25

FAS 888

Poor

Over: S FORK CYPRESS CREEK

3 MI N OF ILL 13, Gallatin, IL

Built 1959 Load: 18.8 t ADT: 1,100

FAS 892

Poor

Over: SALINE RIVER

1.2 MI E OF IL 1, Gallatin, IL

Built 1900 Load: 19.4 t ADT: 350

SBI 13 (UNMARKED)

Poor

Over: CYPRESS DITCH

0.1 MI N OF JUNCTION, Gallatin, IL

Built 1940 Load: 25.9 t ADT: 10

ILL 13

Poor

Over: NORTH FORK SALINE R

2.5 MI W ILL 1, Gallatin, IL

Built 1964 Load: 34.0 t ADT: 3,700

ILL 1

Poor

Over: CRAWFORD CREEK

4.3 MI N OF ILL 13, Gallatin, IL

Built 1929 Load: 34.3 t ADT: 1,400

TR 3

Poor

Over: ABANDONED RR

WEST OF US RTE 45, Gallatin, IL

Built 1900 Load: 35.6 t ADT: 10

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.