County profile · official public datasets

Lamar County, MS

150 public highway bridges tracked in the FHWA National Bridge Inventory: 82.7% rated Good, 17.3% Fair, 0% Poor.

150
Public bridges
82.7%
Good condition
0%
Poor condition

The verdict

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

Lamar County posts a top-5% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 2%
lowest Poor share in state
0%
Poor-condition share
150
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.

Lamar County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lamar County ranks #2 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Lamar County, Mississippi contains 150 public highway bridges. Roughly 82.7% are rated “Good,” 17.3% “Fair,” and 0% “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

150

Public highway bridges in Lamar County

Good condition

82.7%

124 of 150 rated 7-9

Fair condition

17.3%

26 of 150 rated 5-6

Poor condition

0%

0 of 150 rated 4 or below

In-state Poor-share rank

#2 of 82

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

Condition distribution

Share of 150 NBI-tracked bridges by lowest applicable component rating.

Good
82.7% (124)
Fair
17.3% (26)
Poor
0% (0)

27.3% of Lamar County's bridges have passed the 50-year mark

41 of the 150 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 82.7% 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.

When Lamar County's bridges were built

150 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 66 of the county's bridges still in the inventory were built, which is 44% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1985) matches the Mississippi average (1986).

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

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

The 5 Mississippi counties nearest Lamar County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1986 is in line with the group.

Showing the 5 closest of 81 Mississippi counties eligible for comparison.

Bridge inventory size and condition shares for Lamar County and the 5 Mississippi counties closest to it in inventory size
County Bridges Poor
Franklin County 157 10.2%
Tallahatchie County 155 20%
Clay County 154 1.9%
Walthall County 154 1.3%
Lamar County (this page) 150 0%
Tishomingo County 144 4.2%

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 Mississippi so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside MS (150 bridges here).

Similar average build year

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

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

All 150 Good 124 Fair 26 Poor 0

Good-condition bridges (124)

COURTNEY ROAD

Good

Over: LITTLE BLACK CREEK

SEC 33 T 2N R15W, Lamar, MS

Built 2001 Load: 45.4 t ADT: 120

D. S. ROUSE ROAD

Good

Over: CLEAR CREEK

SEC 32 T 2N R16W, Lamar, MS

Built 1995 Load: 45.4 t ADT: 150

JAKE JOHNSON RD

Good

Over: MILL CREEK

SEC 8 T 3N R14W, Lamar, MS

Built 1995 Load: 45.4 t ADT: 330

HAROLD TUCKER ROAD

Good

Over: BLACK TOM CREEK

SEC 36 T 3N R14W, Lamar, MS

Built 1994 Load: 45.4 t ADT: 100

BOUNDS ROAD

Good

Over: LITTLE BLACK CREEK

SEC 3 T 3N R15W, Lamar, MS

Built 1994 Load: 45.4 t ADT: 130

LITTLE CREEK ROAD

Good

Over: LITTLE CREEK

SEC 3 T 3N R15W, Lamar, MS

Built 1999 Load: 45.4 t ADT: 150

PROSPRES RIDGE RD

Good

Over: JACKS CREEK

SEC 32 T 3N R16W, Lamar, MS

Built 1994 Load: 45.4 t ADT: 130

OLOH ROAD

Good

Over: BLACK CREEK

SEC 2 T 4N R16W B, Lamar, MS

Built 1994 Load: 45.4 t ADT: 450

HICKORY GROVE ROAD

Good

Over: BLACK CREEK

SEC 7 T 5N R16W B, Lamar, MS

Built 1993 Load: 45.4 t ADT: 125

FOSTER ROAD

Good

Over: BEAR BAY CREEK

SEC 21 T 5N R16W, Lamar, MS

Built 1999 Load: 45.4 t ADT: 90

J.D. HATTEN ROAD

Good

Over: BEAR BAY BRANCH

SEC 22 T 5N R16W, Lamar, MS

Built 2007 Load: 46.7 t ADT: 70

MITCHELL ROAD

Good

Over: DANIEL REED BRAKE

SEC 18 T 2N R14W, Lamar, MS

Built 2009 Load: 53.6 t ADT: 95

FOUR MILE ROAD

Good

Over: BRANCH

SEC 22 T 1N R15W, Lamar, MS

Built 1993 Load: 53.9 t ADT: 130

WEST SENECA ROAD

Good

Over: RED CREEK

SEC 24 T 1N R15W, Lamar, MS

Built 1994 Load: 53.9 t ADT: 170

CORINTH ROAD

Good

Over: LITTLE CREEK

SEC 34 T 2N R15W, Lamar, MS

Built 1995 Load: 53.9 t ADT: 150

LEVI BRYANT RD

Good

Over: BRANCH

SEC 2 T 2N R16W, Lamar, MS

Built 1993 Load: 53.9 t ADT: 100

TATUM SALT DOME

Good

Over: HALF MOON CREEK

SEC 22 T 2N R16W, Lamar, MS

Built 1995 Load: 53.9 t ADT: 300

KNIGHT ROAD

Good

Over: LITTLE BLACK CREEK

SEC 6 T 3N R15W, Lamar, MS

Built 1994 Load: 53.9 t ADT: 170

LITTLE CREEK ROAD

Good

Over: HUDSON CREEK

SEC 11 T 3N R15W, Lamar, MS

Built 1995 Load: 53.9 t ADT: 120

COLE ROAD

Good

Over: BRANCH

SEC 19 T 4N R14W, Lamar, MS

Built 1994 Load: 53.9 t ADT: 1,000

US 98

Good

Over: STREAM

2.8 MI W SR 589, Lamar, MS

Built 1941 Load: 74.7 t ADT: 13,000

I 59

Good

Over: MYERS BAY CREEK

6.8 MI N SR 13, Lamar, MS

Built 1961 Load: 99.9 t ADT: 8,000

I 59

Good

Over: MYERS BAY CREEK

6.8 MI N SR 13, Lamar, MS

Built 1961 Load: 99.9 t ADT: 8,000

I 59

Good

Over: MIXONS CREEK

LAMAR/FORREST CL, Lamar, MS

Built 1960 Load: 99.9 t ADT: 48,000

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.