County profile · official public datasets

Uinta County, WY

132 public highway bridges tracked in the FHWA National Bridge Inventory: 18.9% rated Good, 69.7% Fair, 11.4% Poor.

132
Public bridges: 18.9%
Good condition: 11.4%
Poor condition

The verdict

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

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

21st
of 23 on Poor share: 11.4%
Poor-condition share: 132
public highway bridges: 1976
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.

Uinta County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Uinta County ranks #21 of 23 Wyoming counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11.4%). Uinta County, Wyoming contains 132 public highway bridges. Roughly 18.9% are rated “Good,” 69.7% “Fair,” and 11.4% “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

132

Public highway bridges in Uinta County

Good condition

18.9%

25 of 132 rated 7-9

Fair condition

69.7%

92 of 132 rated 5-6

Poor condition

11.4%

15 of 132 rated 4 or below

In-state Poor-share rank

#21 of 23

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

Condition distribution

Share of 132 NBI-tracked bridges by lowest applicable component rating.

Good

18.9% (25)

Fair

69.7% (92)

Poor

11.4% (15)

Uinta County's Poor-condition bridges carry 28,140 vehicle crossings a day

That is 6.7% of the county's reported daily bridge traffic on 11.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,876 crossings a day against 2,160 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 132 of 132 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

52.3% of Uinta County's bridges have passed the 50-year mark

69 of the 132 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 18.9% 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 30.6% of the county's Poor-condition bridge traffic

I-80 WBL over Yellow Creek Road, built 1967, carries 8,612 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 15-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 28,140 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

2
1940s

3
1950s

9
1960s

55
1970s

6
1980s

35
1990s

9
2000s

8
2010s

3
2020s

2

What this shows Construction peaked in the 1960s, when 55 of the county's bridges still in the inventory were built, which is 41.7% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1976) matches the Wyoming average (1976).

How Uinta County compares with Wyoming's closest counties by inventory size

The 5 Wyoming counties nearest Uinta County in number of bridges, with their condition splits. Its 11.4% Poor share is the 4th-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1978 is in line with the group.

Showing the 5 closest of 22 Wyoming counties eligible for comparison.

Bridge inventory size and condition shares for Uinta County and the 5 Wyoming counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Converse County	137	14.6%	72.3%	13.1%	1974
Natrona County	135	30.4%	65.2%	4.4%	1977
Uinta County (this page)	132	18.9%	69.7%	11.4%	1976
Lincoln County	129	31.8%	62.8%	5.4%	1985
Albany County	124	33.1%	65.3%	1.6%	1976
Teton County	119	31.9%	55.5%	12.6%	1978

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

Similar inventory size

Nearest county inventories outside WY (132 bridges here).

Kendall County, IL · 132 bridges
Massac County, IL · 132 bridges
Monroe County, IL · 132 bridges
St. Joseph County, MI · 132 bridges

Similar average build year

Nearest mean year-built outside WY (1976 here).

Marion County, IN · avg 1976 · 958 bridges
Mohave County, AZ · avg 1976 · 641 bridges
Comanche County, OK · avg 1976 · 593 bridges
Prince George's County, MD · avg 1976 · 576 bridges

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

All 132 Good 25 Fair 92 Poor 15

Good-condition bridges (25)

Sort:

Uinta County Bridge Snapshot

Condition distribution

Uinta County's Poor-condition bridges carry 28,140 vehicle crossings a day

52.3% of Uinta County's bridges have passed the 50-year mark

One structure carries 30.6% of the county's Poor-condition bridge traffic

How Uinta County compares with Wyoming'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 (25)

WYO 414

I-80 Bus

Ui Cnty Rd 271

Ui Cnty Rd 274

WYO 410

I-80 EBL

I-80 WBL

WYO 410

WYO 89

I-80 Bus

US 189

Ui Cnty Rd 159

I-80 EBL

WYO 414

Ui Cnty Rd 279

ROAD 40075

Ui Cnty Rd 167

WYO 411

Ui Cnty Rd 221

WYO 414

I-80 EBL

I-80 WBL

Ui Cnty Rd 217

WYO 411

Holland Drive

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