County profile · official public datasets

Rankin County, MS

374 public highway bridges tracked in the FHWA National Bridge Inventory: 57.2% rated Good, 37.4% Fair, 5.3% Poor.

374
Public bridges: 57.2%
Good condition: 5.3%
Poor condition

The verdict

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

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

48th
of 82 on Poor share: 5.3%
Poor-condition share: 374
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.

Rankin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Rankin County ranks #48 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.3%). Rankin County, Mississippi contains 374 public highway bridges. Roughly 57.2% are rated “Good,” 37.4% “Fair,” and 5.3% “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

374

Public highway bridges in Rankin County

Good condition

57.2%

214 of 374 rated 7-9

Fair condition

37.4%

140 of 374 rated 5-6

Poor condition

5.3%

20 of 374 rated 4 or below

In-state Poor-share rank

#48 of 82

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

Condition distribution

Share of 374 NBI-tracked bridges by lowest applicable component rating.

Good

57.2% (214)

Fair

37.4% (140)

Poor

5.3% (20)

Rankin County's Poor-condition bridges carry 176,360 vehicle crossings a day

That is 6.2% of the county's reported daily bridge traffic on 5.3% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 8,818 crossings a day against 8,756 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 374 of 374 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

32.9% of Rankin County's bridges have passed the 50-year mark

123 of the 374 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 57.2% 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 13.6% of the county's Poor-condition bridge traffic

I 20 E TO I 55 N over OVER I 20 WB, built 1966, carries 24,000 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 20-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 176,360 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

1
1930s

13
1940s

3
1950s

12
1960s

71
1970s

31
1980s

56
1990s

98
2000s

55
2010s

21
2020s

13

What this shows Construction peaked in the 1990s, when 98 of the county's bridges still in the inventory were built, which is 26.2% 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).

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

The 5 Mississippi counties nearest Rankin County in number of bridges, with their condition splits. Its 5.3% Poor share is the 3rd-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1984 is in line with the group.

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

Bridge inventory size and condition shares for Rankin County and the 5 Mississippi counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Lee County	385	66.8%	28.8%	4.4%	1984
Lincoln County	380	58.9%	30.3%	10.8%	1986
Rankin County (this page)	374	57.2%	37.4%	5.3%	1985
Jones County	329	48.3%	44.1%	7.6%	1982
Washington County	317	34.7%	54.9%	10.4%	1984
Madison County	311	51.1%	45.7%	3.2%	1983

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

Similar inventory size

Nearest county inventories outside MS (374 bridges here).

Benton County, IA · 374 bridges
Baltimore city County, MD · 374 bridges
Cape Girardeau County, MO · 374 bridges
Monroe County, WI · 374 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 374 Good 214 Fair 140 Poor 20

Good-condition bridges (214)

Sort:

Rankin County Bridge Snapshot

Condition distribution

Rankin County's Poor-condition bridges carry 176,360 vehicle crossings a day

32.9% of Rankin County's bridges have passed the 50-year mark

One structure carries 13.6% of the county's Poor-condition bridge traffic

How Rankin 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 (214)

I 20

I 20

I 20

I 20

SR 18

LAKE RD

SR 471

US 80

I 20 WB TO I 55 NB

SR 475

CATO RD

LEESBURG RD

LOCKWOOD RD

MONTEREY ROAD

I 20 WB TO I 55 NB

TRAYLOR ROAD

GILL ROAD

GILL ROAD

WILDCAT CREEK RD.

WARREN HILL ROAD

COUNTY LINE RD.

MULLICAN ROAD

KERSH ROAD

RAYMOND PURVIS RD

RANKIN RD

DARLENE ROAD

SHILOH-GULDE RD.

RANKIN-FERGUSON RD

LANGFORD PL

PELA-LAKE ROAD

PURVIS RD

RED OAK RD

LEWIS PRESTAGE RD

FLEMING RD

MCINTYRE RD

LEESBURG RD

BARFOOT SPRINGS RD

JOHNS SHILOH ROAD

OIL WELL RD

SR 25

SR 25

SR 25

SR 468

PINEBROOK CIRCLE

HICKORY RIDGE RD.

THOMASVILLE RD.

GREENFIELD RD

SHILOH RD

GARRETT LN

SR 25

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