County profile · official public datasets

Marshall County, MS

255 public highway bridges tracked in the FHWA National Bridge Inventory: 44.7% rated Good, 47.8% Fair, 7.5% Poor.

255
Public bridges: 44.7%
Good condition: 7.5%
Poor condition

The verdict

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

Marshall 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.

59th
of 82 on Poor share: 7.5%
Poor-condition share: 255
public highway bridges: 1993
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.

Marshall County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Marshall County ranks #59 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.5%). Marshall County, Mississippi contains 255 public highway bridges. Roughly 44.7% are rated “Good,” 47.8% “Fair,” and 7.5% “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

255

Public highway bridges in Marshall County

Good condition

44.7%

114 of 255 rated 7-9

Fair condition

47.8%

122 of 255 rated 5-6

Poor condition

7.5%

19 of 255 rated 4 or below

In-state Poor-share rank

#59 of 82

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

Condition distribution

Share of 255 NBI-tracked bridges by lowest applicable component rating.

Good

44.7% (114)

Fair

47.8% (122)

Poor

7.5% (19)

Marshall County's Poor-condition bridges carry 32,375 vehicle crossings a day

That is 3.9% of the county's reported daily bridge traffic on 7.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,704 crossings a day against 3,840 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 255 of 255 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

12.9% of Marshall County's bridges have passed the 50-year mark

33 of the 255 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 44.7% 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.

One structure carries 34% of the county's Poor-condition bridge traffic

I 22 over MUSGRAY ROAD, built 1975, carries 11,000 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 19-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 32,375 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1910s

1
1930s

9
1940s

4
1950s

3
1960s

9
1970s

24
1980s

37
1990s

62
2000s

52
2010s

43
2020s

11

What this shows Construction peaked in the 1990s, when 62 of the county's bridges still in the inventory were built, which is 24.3% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1993, 7 years newer than the Mississippi average of 1986.

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

The 5 Mississippi counties nearest Marshall County in number of bridges, with their condition splits. Its 7.5% Poor share is the 6th-lowest of these 6. Its average build year of 1993 against a peer-group mean of 1989 is in line with the group.

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

Bridge inventory size and condition shares for Marshall County and the 5 Mississippi counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Copiah County	266	25.9%	69.2%	4.9%	1987
DeSoto County	266	59.4%	38.7%	1.9%	1995
Lafayette County	259	41.7%	54.1%	4.2%	1990
Marshall County (this page)	255	44.7%	47.8%	7.5%	1993
Lowndes County	248	76.2%	21%	2.8%	1987
Chickasaw County	247	57.5%	36%	6.5%	1984

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

Similar inventory size

Nearest county inventories outside MS (255 bridges here).

Marion County, AL · 255 bridges
Osceola County, FL · 255 bridges
Nuckolls County, NE · 255 bridges
Santa Fe County, NM · 255 bridges

Similar average build year

Nearest mean year-built outside MS (1993 here).

Salt Lake County, UT · avg 1993 · 659 bridges
Rowan County, NC · avg 1993 · 245 bridges
Cabarrus County, NC · avg 1993 · 236 bridges
Daviess County, IN · avg 1993 · 221 bridges

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

All 255 Good 114 Fair 122 Poor 19

Fair-condition bridges (122)

Sort:

Marshall County Bridge Snapshot

Condition distribution

Marshall County's Poor-condition bridges carry 32,375 vehicle crossings a day

12.9% of Marshall County's bridges have passed the 50-year mark

One structure carries 34% of the county's Poor-condition bridge traffic

How Marshall 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

Fair-condition bridges (122)

OLD OXFORD RD

SR 311

SR 309

SR 310

VICTORIA ROAD S.

WILKENS RD

SR 309

SR 309

OLD HWY 4

QUINN ROAD

I 22

I 22

SR 7

WILDCAT ROAD

RABBIT RIDGE ROAD

I 22

I 22

I 269

SR 178

SR 178

HERNANDO ROAD

CAYCE ROAD

I 22

TASKA MT.PLEASANT

FRENCH ROAD

CAYCE ROAD

ISOM CHAPEL ROAD

ISOM CHAPEL ROAD

MCALEXANDER ROAD

OLD HIGHWAY 4

ODELL ROAD

NORTH ACCESS ROAD

STONEWALL RD.EAST

US 72

SR 311

JOE COX ROAD

CAYCE ROAD

BILLS ROAD

I 22

VICTORIA ROAD S.

SR 4

OLD HIGHWAY 4

MARY RAHE DRIVE

I 269 SB CD ROAD

I 22

I 22 EB CD ROAD

CLEAR CREEK ROAD

TYRO ROAD

WEST BOUNDARY ST

CRESCENT MEADOW DR

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