County profile · official public datasets

Amite County, MS

210 public highway bridges tracked in the FHWA National Bridge Inventory: 69% rated Good, 21.4% Fair, 9.5% Poor.

210
Public bridges: 69%
Good condition: 9.5%
Poor condition

The verdict

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

Amite County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

68th
of 82 on Poor share: 9.5%
Poor-condition share: 210
public highway bridges: 1987
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.

Amite County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Amite County ranks #68 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.5%). Amite County, Mississippi contains 210 public highway bridges. Roughly 69% are rated “Good,” 21.4% “Fair,” and 9.5% “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

210

Public highway bridges in Amite County

Good condition

69%

145 of 210 rated 7-9

Fair condition

21.4%

45 of 210 rated 5-6

Poor condition

9.5%

20 of 210 rated 4 or below

In-state Poor-share rank

#68 of 82

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

Condition distribution

Share of 210 NBI-tracked bridges by lowest applicable component rating.

Good

69% (145)

Fair

21.4% (45)

Poor

9.5% (20)

Amite County's Poor-condition bridges carry 1,300 vehicle crossings a day

That is 1.1% of the county's reported daily bridge traffic on 9.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 65 crossings a day against 644 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 210 of 210 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

32.4% of Amite County's bridges have passed the 50-year mark

68 of the 210 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 69% 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 13.1% of the county's Poor-condition bridge traffic

LOWER CENTREVILLE over WEST FORK AMITE RIVER, built 1960, carries 170 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 20-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1,300 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

5
1940s

3
1950s

14
1960s

28
1970s

32
1980s

27
1990s

36
2000s

28
2010s

31
2020s

6

What this shows Construction peaked in the 1990s, when 36 of the county's bridges still in the inventory were built, which is 17.1% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1987) matches the Mississippi average (1986).

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

The 5 Mississippi counties nearest Amite County in number of bridges, with their condition splits. Its 9.5% Poor share is the 5th-lowest of these 6. Its average build year of 1987 against a peer-group mean of 1988 is in line with the group.

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

Bridge inventory size and condition shares for Amite County and the 5 Mississippi counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Alcorn County	213	64.8%	33.8%	1.4%	1991
Calhoun County	213	48.8%	40.8%	10.3%	1985
Holmes County	212	52.4%	39.6%	8%	1988
Kemper County	211	60.2%	37%	2.8%	1991
Pike County	211	55.5%	38.9%	5.7%	1984
Amite County (this page)	210	69%	21.4%	9.5%	1987

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

Similar inventory size

Nearest county inventories outside MS (210 bridges here).

Fulton County, IL · 210 bridges
Clinton County, IN · 210 bridges
Howard County, IA · 210 bridges
Montgomery County, IA · 210 bridges

Similar average build year

Nearest mean year-built outside MS (1987 here).

St. Louis County, MO · avg 1987 · 912 bridges
Ellis County, TX · avg 1987 · 691 bridges
St. Louis County, MN · avg 1987 · 663 bridges
Palm Beach County, FL · avg 1987 · 610 bridges

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

All 210 Good 145 Fair 45 Poor 20

Good-condition bridges (145)

Sort:

Amite County Bridge Snapshot

Condition distribution

Amite County's Poor-condition bridges carry 1,300 vehicle crossings a day

32.4% of Amite County's bridges have passed the 50-year mark

One structure carries 13.1% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Good-condition bridges (145)

OXFORD-MEADVILLE

BERWICK - CASSELL

WROTEN ROAD

MARY WALL BRIDGE

SR 570

PEORIA ROAD

E. HOMOCHITTO RD.

SR 24

MT. PLEASANT ROAD

SR 48

MIXON ROAD

UPPER GLADING ROAD

SR 24

THOMPSON ROAD

GREENSBURG ROAD

THOMPSON ROAD

ROLLINSON ROAD

SR 569

SR 567

BEAN ROAD

SR 33

SR 33

SR 570

SR 569

SR 569

SR 569

SMYLIE ROAD

PATTERSON ROAD

PECAN ORCHARD ROAD

SR 569

COBB ROAD

COBB ROAD

GREENSBURG ROAD

SR 584

SR 584

MT. PLEASANT ROAD

PATTERSON ROAD

GRAVES ROAD

THORNTON ROAD

SR 584

THOMPSON ROAD

LOWER CENTREVILLE

POWELL ROAD

SWAMP ROAD

SR 24

LOWER CENTREVILLE

CHANCE ROAD

DOMINICK ROAD

PERRY ROAD

POOLE LANE

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