County profile · official public datasets

Tishomingo County, MS

144 public highway bridges tracked in the FHWA National Bridge Inventory: 58.3% rated Good, 37.5% Fair, 4.2% Poor.

144
Public bridges: 58.3%
Good condition: 4.2%
Poor condition

The verdict

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

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

Top 40%
lowest Poor share in state: 4.2%
Poor-condition share: 144
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.

Tishomingo County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Tishomingo County ranks #33 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.2%). Tishomingo County, Mississippi contains 144 public highway bridges. Roughly 58.3% are rated “Good,” 37.5% “Fair,” and 4.2% “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

144

Public highway bridges in Tishomingo County

Good condition

58.3%

84 of 144 rated 7-9

Fair condition

37.5%

54 of 144 rated 5-6

Poor condition

4.2%

6 of 144 rated 4 or below

In-state Poor-share rank

#33 of 82

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

Condition distribution

Share of 144 NBI-tracked bridges by lowest applicable component rating.

Good

58.3% (84)

Fair

37.5% (54)

Poor

4.2% (6)

Tishomingo County's Poor-condition bridges carry 13,219 vehicle crossings a day

That is 6.2% of the county's reported daily bridge traffic on 4.2% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 2,203 crossings a day against 1,198 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 144 of 144 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

22.9% of Tishomingo County's bridges have passed the 50-year mark

33 of the 144 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 58.3% 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 43.9% of the county's Poor-condition bridge traffic

SR 25 over CRIPPLE DEER CREEK, built 1948, carries 5,800 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 6-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 13,219 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

1
1940s

3
1950s

12
1960s

12
1970s

10
1980s

51
1990s

26
2000s

15
2010s

8
2020s

6

What this shows Construction peaked in the 1980s, when 51 of the county's bridges still in the inventory were built, which is 35.4% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1985) matches the Mississippi average (1986).

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

The 5 Mississippi counties nearest Tishomingo County in number of bridges, with their condition splits. Its 4.2% Poor share is the 4th-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1987 is in line with the group.

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

Bridge inventory size and condition shares for Tishomingo County and the 5 Mississippi counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Lamar County	150	82.7%	17.3%	0%	1985
Tishomingo County (this page)	144	58.3%	37.5%	4.2%	1985
Jefferson Davis County	142	77.5%	19.7%	2.8%	1992
Leflore County	139	40.3%	50.4%	9.4%	1976
Tate County	139	39.6%	58.3%	2.2%	1992
Tippah County	139	60.4%	34.5%	5%	1989

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

Similar inventory size

Nearest county inventories outside MS (144 bridges here).

Muscatine County, IA · 144 bridges
Anderson County, KS · 144 bridges
Webster County, KY · 144 bridges
Muskegon County, MI · 144 bridges

Similar average build year

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

Hillsborough County, FL · avg 1985 · 840 bridges
Lancaster County, NE · avg 1985 · 661 bridges
Nueces County, TX · avg 1985 · 528 bridges
Grayson County, TX · avg 1985 · 513 bridges

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

All 144 Good 84 Fair 54 Poor 6

All bridges (144)

Sort:

US 72

Fair

Over: BRANCH

8.8 MI E ALCORN CL, Tishomingo, MS

Built 1986 Load: 56.7 t ADT: 11,000

SR 365

Fair

Over: COLD MILL CREEK

8.1 MI N US 72, Tishomingo, MS

Built 1960 Load: 98.1 t ADT: 1,900

US 72

Fair

Over: ROWIN CREEK

1.7 MI W ALA ST LINE, Tishomingo, MS

Built 1984 Load: 99.9 t ADT: 6,900

SR 25

Fair

Over: PICKENS BRANCH

4.3 MI N US 72, Tishomingo, MS

Tishomingo County Bridge Snapshot

Condition distribution

Tishomingo County's Poor-condition bridges carry 13,219 vehicle crossings a day

22.9% of Tishomingo County's bridges have passed the 50-year mark

One structure carries 43.9% of the county's Poor-condition bridge traffic

How Tishomingo 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

All bridges (144)

US 72

SR 365

US 72

SR 25

NATCHEZ TRACE PARK

SR 25

ROCK QUARRY RD

NATCHEZ TRACE PARK

CR 130

NATCHEZ TRACE PARK

WILMUTH STREET

SR 30

SR 365

BURNSVILLE IND PRK

US 72

US 72

SR 350

US 72

SR 25

SR 25

CR131

CR 993

CR 023

CR 957

SR 365

2ND STREET

US 72

US 72

NATCHEZ TRACE PARK

SR 25

COUNTY ROAD 157

NATCHEZ TRACE PARK

CR 9

SR 4

NATCHEZ TRACE PARK

CR 363

CR26

CR29

CR 255

NATCHEZ TRACE PARK

SR 25

WASHINGTON ST.

CR 961

CR300

CR 244

CR 298

NATCHEZ TRACE PARK

JOHN RANKIN HWY.

CR 075

CR 992

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