County profile · official public datasets

Union County, MS

202 public highway bridges tracked in the FHWA National Bridge Inventory: 53.5% rated Good, 45% Fair, 1.5% Poor.

202
Public bridges
53.5%
Good condition
1.5%
Poor condition

The verdict

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

Union County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 10%
lowest Poor share in state
1.5%
Poor-condition share
202
public highway bridges
1990
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.

Union County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Union County ranks #8 of 82 Mississippi counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 1.5%). Union County, Mississippi contains 202 public highway bridges. Roughly 53.5% are rated “Good,” 45% “Fair,” and 1.5% “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

202

Public highway bridges in Union County

Good condition

53.5%

108 of 202 rated 7-9

Fair condition

45%

91 of 202 rated 5-6

Poor condition

1.5%

3 of 202 rated 4 or below

In-state Poor-share rank

#8 of 82

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

Condition distribution

Share of 202 NBI-tracked bridges by lowest applicable component rating.

Good
53.5% (108)
Fair
45% (91)
Poor
1.5% (3)

Union County's Poor-condition bridges carry 4,875 vehicle crossings a day

That is 0.7% of the county's reported daily bridge traffic on 1.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,625 crossings a day against 3,584 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 202 of 202 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

22.8% of Union County's bridges have passed the 50-year mark

46 of the 202 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 53.5% 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 61.5% of the county's Poor-condition bridge traffic

SR 348 over KINGS CREEK, built 1952, carries 3,000 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 3-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,875 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Union County's bridges were built

202 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2000s, when 40 of the county's bridges still in the inventory were built, which is 19.8% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1990) matches the Mississippi average (1986).

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

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

The 5 Mississippi counties nearest Union County in number of bridges, with their condition splits. Its 1.5% Poor share is the 2nd-lowest of these 6. Its average build year of 1990 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 Union County and the 5 Mississippi counties closest to it in inventory size
County Bridges Poor
Prentiss County 205 4.9%
Union County (this page) 202 1.5%
Marion County 201 5%
Noxubee County 201 4%
Simpson County 200 6.5%
Leake County 199 1%

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

Similar inventory size

Nearest county inventories outside MS (202 bridges here).

Similar average build year

Nearest mean year-built outside MS (1990 here).

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

All 202 Good 108 Fair 91 Poor 3

Good-condition bridges (108)

SR 30

Good

Over: WILHITE CREEK

6.6 MI E SR 15, Union, MS

Built 2018 Load: 33.7 t ADT: 3,000

SR 30

Good

Over: WILHITE CR NORTH BRANCH

6.7 MI E SR 15, Union, MS

Built 2018 Load: 33.7 t ADT: 3,000

COUNTY ROAD 137

Good

Over: WILHITE CREEK

SEC 26 T 6S R 3E B, Union, MS

Built 1995 Load: 33.7 t ADT: 150

COUNTY ROAD 137

Good

Over: TALLAHATCHIE CANAL

SEC 26 T 6S R 3E B, Union, MS

Built 1995 Load: 33.7 t ADT: 150

COUNTY ROAD 478

Good

Over: HELL CREEK CANAL

SEC 24 T 6S R 2E, Union, MS

Built 2012 Load: 33.7 t ADT: 550

COUNTY ROAD 7

Good

Over: MILL CREEK

SEC 20 T 6S R 1E, Union, MS

Built 2018 Load: 33.7 t ADT: 100

COUNTY ROAD 137

Good

Over: CANE CREEK

SEC 34 T 6S R 3E B, Union, MS

Built 2017 Load: 33.7 t ADT: 150

COUNTY ROAD 46

Good

Over: TALLAHATCHIE SLOUGH

SEC 26 T 7S R 1E B, Union, MS

Built 2021 Load: 33.7 t ADT: 1,100

COUNTY ROAD 59

Good

Over: LITTLE MUD CREEK

SEC 09 T 7S R 2E, Union, MS

Built 2018 Load: 33.7 t ADT: 150

COUNTY ROAD 171

Good

Over: BRIDGE CREEK

SEC 8 T 7S R 5E B, Union, MS

Built 2016 Load: 33.7 t ADT: 100

OUNTY ROAD 90

Good

Over: JONES CREEK

SEC 12 T 8S R 2E, Union, MS

Built 2021 Load: 33.7 t ADT: 200

SR 349

Good

Over: MILLS CREEK

4.9 MI N SR 30, Union, MS

Built 2005 Load: 33.8 t ADT: 840

SR 349

Good

Over: CORNERSVILLE CREEK

5.0 MI N SR 30, Union, MS

Built 2005 Load: 34.3 t ADT: 840

COUNTY ROAD 147

Good

Over: PINHOOK CREEK

SEC 13 T 6S R 3E, Union, MS

Built 2015 Load: 34.3 t ADT: 75

COUNTY ROAD 46

Good

Over: TALLAHATCHIE RELIEF

SEC 26 T 7S R 1E B, Union, MS

Built 2021 Load: 34.3 t ADT: 1,100

SR 762

Good

Over: JONES CREEK

0.8 MI W SR 15, Union, MS

Built 2001 Load: 34.4 t ADT: 2,200

S GLENFIELD ROAD

Good

Over: I 22

0.5 MI W SR 30, Union, MS

Built 1972 Load: 34.6 t ADT: 2,800

COUNTY ROAD 83

Good

Over: LUKESASPER CREEK

SEC 28 T 6S R 3E, Union, MS

Built 1997 Load: 34.7 t ADT: 125

COUNTY ROAD 117

Good

Over: OKANNATIE CREEK

SEC 11 T 8S R 3E, Union, MS

Built 1997 Load: 34.7 t ADT: 75

COUNTY ROAD 128

Good

Over: NORTH BRANCH KING CREEK

SEC 11 T 7S R 3E, Union, MS

Built 2018 Load: 34.7 t ADT: 50

COUNTY ROAD 171

Good

Over: HALL CREEK

SEC 10 T 7S R 4E B, Union, MS

Built 2005 Load: 35.0 t ADT: 130

I 22

Good

Over: KING CREEK

0.8 MI E SR 15, Union, MS

Built 1968 Load: 35.1 t ADT: 14,000

SR 178

Good

Over: LITTLE TALLAHATCHIE

1.2 MI W SR 15, Union, MS

Built 2005 Load: 35.1 t ADT: 14,000

COUNTY ROAD 54

Good

Over: LITTLE MUD CREEK

SEC 33 T 6S R 2E, Union, MS

Built 1998 Load: 35.6 t ADT: 80

I 22

Good

Over: NORVELL CREEK

2.2 MI W SR 30, Union, MS

Built 1972 Load: 36.0 t ADT: 23,000

COUNTY ROAD 107

Good

Over: I 22

3.4 MI E SR 15, Union, MS

Built 1979 Load: 36.3 t ADT: 630

COUNTY ROAD 1

Good

Over: ROCHESTER CREEK

SEC 8 T 6S R 1E B, Union, MS

Built 1997 Load: 37.6 t ADT: 370

COUNTY ROAD 14

Good

Over: FLOYD CREEK

SEC 34 T 6S R 1E B, Union, MS

Built 2006 Load: 37.6 t ADT: 80

CO. RD. 69

Good

Over: AYERS CREEK

SEC 16 T 6S R 2E B, Union, MS

Built 1999 Load: 37.6 t ADT: 175

COUNTY ROAD 149

Good

Over: SPENCER CREEK

SEC 7 T 6S R 4E, Union, MS

Built 1998 Load: 37.6 t ADT: 110

COUNTY ROAD 171

Good

Over: CAMP CREEK

SEC 4 T 7S R 5E B, Union, MS

Built 1988 Load: 37.6 t ADT: 630

COUNTY ROAD 47

Good

Over: OKANNATIE RELIEF

SEC 16 T 8S R 2E B, Union, MS

Built 2007 Load: 37.6 t ADT: 1,000

COUNTY ROAD 47

Good

Over: OKANNATIE OLD RUN

SEC 16 T 8S R 2E B, Union, MS

Built 2007 Load: 37.6 t ADT: 1,000

COUNTY ROAD 278

Good

Over: BURLINGTON & NORTHERN RR

SEC 22 T 7S R 3E B, Union, MS

Built 2000 Load: 38.6 t ADT: 250

COUNTY ROAD 278

Good

Over: OKANNATIE CREEK

SEC 1 T 8S R 3E B, Union, MS

Built 2013 Load: 38.9 t ADT: 120

HILLCREST DRIVE

Good

Over: I 22

0.4 MI W SR 15, Union, MS

Built 1965 Load: 39.0 t ADT: 820

SR 348

Good

Over: BRIDGE CREEK

0.7 MI W LEE CL, Union, MS

Built 1988 Load: 39.4 t ADT: 2,200

SR 30

Good

Over: CREEK

17.8 MI E SR15, Union, MS

Built 1955 Load: 39.5 t ADT: 2,100

I 22

Good

Over: CENTRAL AVE/PED-BICYCLE

1.0 MI W SR 15, Union, MS

Built 1965 Load: 40.2 t ADT: 13,500

SR 15

Good

Over: LITTLE TALLAHATCHIE REL

1.6 MI N SR 178, Union, MS

Built 2013 Load: 40.3 t ADT: 3,650

COUNTY ROAD 172

Good

Over: DRAINAGE DITCH

SEC 31 T 6S R 5E, Union, MS

Built 2001 Load: 40.5 t ADT: 60

COUNTY ROAD 81

Good

Over: LUKESASPER CREEK

SEC 5 T 6S R 3E B, Union, MS

Built 2022 Load: 41.1 t ADT: 1,600

SR 30

Good

Over: I 22

SR 30 OVER US 78, Union, MS

Built 1965 Load: 41.5 t ADT: 7,600

I 22

Good

Over: SR 9

US 78 OVER SR 9 NORTH, Union, MS

Built 1978 Load: 42.0 t ADT: 14,000

I 22 RAMP

Good

Over: SR 9

COLL. RD OVER SR 9 NORTH, Union, MS

Built 2011 Load: 42.2 t ADT: 160

SR 348

Good

Over: STREAM

3.6 MI E SR 15, Union, MS

Built 1948 Load: 42.4 t ADT: 1,700

SR 348

Good

Over: BRIDGE CREEK RELIEF

0.9 MI W LEE CL, Union, MS

Built 1988 Load: 42.9 t ADT: 2,200

COUNTY ROAD 46

Good

Over: TALLAHATCHIE RELIEF

SEC 26 T 7S R 1E B, Union, MS

Built 2016 Load: 43.4 t ADT: 1,100

SR 15

Good

Over: RELIEF

0.7 MI N PONTOTOC CL, Union, MS

Built 1970 Load: 43.8 t ADT: 9,300

SR 30

Good

Over: RELIEF

0.8 MI E LAFAYETTE CL, Union, MS

Built 1978 Load: 44.8 t ADT: 3,000

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.