County profile · official public datasets

Lamar County, AL

181 public highway bridges tracked in the FHWA National Bridge Inventory: 26% rated Good, 71.8% Fair, 2.2% Poor.

181
Public bridges
26%
Good condition
2.2%
Poor condition

The verdict

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

Lamar County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 42%
lowest Poor share in state
2.2%
Poor-condition share
181
public highway bridges
1966
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.

Lamar County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lamar County ranks #28 of 67 Alabama counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.2%). Lamar County, Alabama contains 181 public highway bridges. Roughly 26% are rated “Good,” 71.8% “Fair,” and 2.2% “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.

Total bridges

181

Public highway bridges in Lamar County

Good condition

26%

47 of 181 rated 7-9

Fair condition

71.8%

130 of 181 rated 5-6

Poor condition

2.2%

4 of 181 rated 4 or below

In-state Poor-share rank

#28 of 67

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

Condition distribution

Share of 181 NBI-tracked bridges by lowest applicable component rating.

Good
26% (47)
Fair
71.8% (130)
Poor
2.2% (4)

Lamar County's Poor-condition bridges carry 2,856 vehicle crossings a day

That is 1.6% of the county's reported daily bridge traffic on 2.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 714 crossings a day against 893 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 181 of 181 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

61.3% of Lamar County's bridges have passed the 50-year mark

111 of the 181 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% 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 33.2% of the county's Poor-condition bridge traffic

FIRST AVENUE EAST over YELLOW CK RELIEF, built 1928, carries 947 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 4-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,856 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Lamar County's bridges were built

181 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1950s, when 53 of the county's bridges still in the inventory were built, which is 29.3% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year is 1966, 8 years older than the Alabama average of 1974.

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

How Lamar County compares with Alabama's closest counties by inventory size

The 5 Alabama counties nearest Lamar County in number of bridges, with their condition splits. Its 2.2% Poor share is the 2nd-lowest of these 6. Its average build year of 1966 against a peer-group mean of 1971 is 5 years older.

Showing the 5 closest of 66 Alabama counties eligible for comparison.

Bridge inventory size and condition shares for Lamar County and the 5 Alabama counties closest to it in inventory size
County Bridges Poor
Chambers County 185 8.1%
St. Clair County 183 1.6%
Lamar County (this page) 181 2.2%
Blount County 180 7.8%
Hale County 177 5.1%
Macon County 177 10.7%

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

Similar inventory size

Nearest county inventories outside AL (181 bridges here).

Similar average build year

Nearest mean year-built outside AL (1966 here).

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

Fair-condition bridges (130)

AL-118

Fair

Over: Branch

Sulligent, Lamar, AL

Built 1926 Load: 46.0 t ADT: 3,306

AL-118

Fair

Over: Branch

Beaverton, Lamar, AL

Built 1926 Load: 46.9 t ADT: 2,323

CR-9

Fair

Over: MUD CREEK RELIEF

8.2 MILES SW OF STAR, Lamar, AL

Built 2006 Load: 46.9 t ADT: 430

LOST CREEK RD

Fair

Over: LOST REED CREEK

3.4 MI. W. ALA. 17, Lamar, AL

Built 1969 Load: 47.0 t ADT: 120

AL-17

Fair

Over: Mud Creek

4.5 MI N OF MILLPORT, Lamar, AL

Built 1929 Load: 47.3 t ADT: 1,330

AL-17

Fair

Over: Drivers Creek

1.0 MI S of Millport, Lamar, AL

Built 1986 Load: 48.1 t ADT: 3,154

SPISEY FORK RD

Fair

Over: NORTHINGTON BRANCH

0.7 MILES WEST OF AL #17, Lamar, AL

Built 2011 Load: 49.8 t ADT: 380

AL-118

Fair

Over: Watson Creek

Mississippi State Line, Lamar, AL

Built 1928 Load: 52.3 t ADT: 2,320

FOUR OAKS ROAD

Fair

Over: CANTRELL MILL CREEK

2.5 MI. NE. HENSON SPRING, Lamar, AL

Built 2003 Load: 53.0 t ADT: 50

COUNTY LAKE RD

Fair

Over: EALON BRANCH

3.3 MI. N. ALA. HWY. 18, Lamar, AL

Built 1953 Load: 53.2 t ADT: 340

MT GAP RD

Fair

Over: YELLOW CREEK

2.7 MI. N. CO. RD. 36, Lamar, AL

Built 1963 Load: 53.3 t ADT: 60

MUD CREEK RD

Fair

Over: MUD CREEK

2.3 MI NORTH OF FERNBANK, Lamar, AL

Built 2004 Load: 55.0 t ADT: 265

CR-34

Fair

Over: WILSON CREEK RELIEF

1.5 MI SOUTH OF MOLLOY, Lamar, AL

Built 2006 Load: 55.0 t ADT: 301

CR-34

Fair

Over: WILSON CREEK

1.5 MI S OF MOLLOY, Lamar, AL

Built 2006 Load: 55.0 t ADT: 301

CR-9

Fair

Over: MUD CREEK

8 MI SW STAR, Lamar, AL

Built 2002 Load: 55.1 t ADT: 430

ABERDEEN RD

Fair

Over: CUT BANK CREEK

7.5 MI NW VERNON, Lamar, AL

Built 2004 Load: 55.1 t ADT: 380

AL-17

Fair

Over: Clear Creek

3.1 MI S of Millport, Lamar, AL

Built 1929 Load: 57.0 t ADT: 2,330

AL-17

Fair

Over: Branch

1.8 MI S of Millport, Lamar, AL

Built 1929 Load: 57.2 t ADT: 3,154

AL-17

Fair

Over: Branch

0.5 MI S DETROIT, Lamar, AL

Built 1948 Load: 60.0 t ADT: 1,867

ABERDEEN RD

Fair

Over: WATSON CREEK

3.2 MI. N.W. VERNON, Lamar, AL

Built 1951 Load: 61.2 t ADT: 980

AL-118

Fair

Over: Owens Mill Branch

0.3 MI E of Crews, Lamar, AL

Built 1926 Load: 61.5 t ADT: 2,933

AL-18

Fair

Over: Stream

3.45 MI W Fayette Co Line, Lamar, AL

Built 1979 Load: 61.9 t ADT: 1,879

AL-17

Fair

Over: Rushing Creek

2.1 MI S of Millport, Lamar, AL

Built 1929 Load: 66.1 t ADT: 2,190

AL-17

Fair

Over: Branch

0.5 MI S MARION CO LINE, Lamar, AL

Built 1948 Load: 69.2 t ADT: 1,542

AL-96

Fair

Over: Kennedy Branch

Kennedy, Lamar, AL

Built 1929 Load: 86.3 t ADT: 1,710

AL-18

Fair

Over: Branch

1.0 MI W OF JCT AL 17, Lamar, AL

Built 1939 Load: 88.9 t ADT: 5,046

AL-17

Fair

Over: Branch

3.3 MI N JCT SR 118, Lamar, AL

Built 1947 Load: 88.9 t ADT: 1,610

AL-17

Fair

Over: Branch

4.4 MI N JCT SR 118, Lamar, AL

Built 1947 Load: 88.9 t ADT: 1,481

CR-9

Fair

Over: BRANCH

.6 MI. N.E. STAR, Lamar, AL

Built 1950 Load: 88.9 t ADT: 510

AL-118

Fair

Over: Turkey Creek

1.4 MI W Sulligent, Lamar, AL

Built 2001 Load: 88.9 t ADT: 4,271
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.