County profile · official public datasets

Washakie County, WY

61 public highway bridges tracked in the FHWA National Bridge Inventory: 41% rated Good, 49.2% Fair, 9.8% Poor.

61
Public bridges: 41%
Good condition: 9.8%
Poor condition

The verdict

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

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

20th
of 23 on Poor share: 9.8%
Poor-condition share: 61
public highway bridges: 1979
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.

Washakie County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Washakie County ranks #20 of 23 Wyoming counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.8%). Washakie County, Wyoming contains 61 public highway bridges. Roughly 41% are rated “Good,” 49.2% “Fair,” and 9.8% “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

Public highway bridges in Washakie County

Good condition

41%

25 of 61 rated 7-9

Fair condition

49.2%

30 of 61 rated 5-6

Poor condition

9.8%

6 of 61 rated 4 or below

In-state Poor-share rank

#20 of 23

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

Condition distribution

Share of 61 NBI-tracked bridges by lowest applicable component rating.

Good

41% (25)

Fair

49.2% (30)

Poor

9.8% (6)

Washakie County's Poor-condition bridges carry 2,833 vehicle crossings a day

That is 4.8% of the county's reported daily bridge traffic on 9.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 472 crossings a day against 863 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 61 of 61 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

42.6% of Washakie County's bridges have passed the 50-year mark

26 of the 61 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 41% 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 52.6% of the county's Poor-condition bridge traffic

Washakie Avenue over Lower Hanover Canal, built 1970, carries 1,490 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 2,833 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

2
1930s

5
1940s

2
1950s

13
1960s

2
1970s

6
1980s

4
1990s

8
2000s

11
2010s

4
2020s

4

What this shows Construction peaked in the 1950s, when 13 of the county's bridges still in the inventory were built, which is 21.3% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1979) matches the Wyoming average (1976).

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

The 5 Wyoming counties nearest Washakie County in number of bridges, with their condition splits. Its 9.8% Poor share is the 6th-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1977 is in line with the group.

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

Bridge inventory size and condition shares for Washakie County and the 5 Wyoming counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Goshen County	106	19.8%	76.4%	3.8%	1974
Big Horn County	91	25.3%	67%	7.7%	1972
Washakie County (this page)	61	41%	49.2%	9.8%	1979
Weston County	43	25.6%	65.1%	9.3%	1978
Hot Springs County	39	25.6%	69.2%	5.1%	1974
Niobrara County	34	44.1%	52.9%	2.9%	1988

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

Similar inventory size

Nearest county inventories outside WY (61 bridges here).

Amador County, CA · 61 bridges
Cheyenne County, CO · 61 bridges
Montezuma County, CO · 61 bridges
Atkinson County, GA · 61 bridges

Similar average build year

Nearest mean year-built outside WY (1979 here).

Pima County, AZ · avg 1979 · 1,150 bridges
Jefferson County, KY · avg 1979 · 662 bridges
Spartanburg County, SC · avg 1979 · 638 bridges
McPherson County, KS · avg 1979 · 586 bridges

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

All 61 Good 25 Fair 30 Poor 6

All bridges (61)

Sort:

Washakie County Bridge Snapshot

Condition distribution

Washakie County's Poor-condition bridges carry 2,833 vehicle crossings a day

42.6% of Washakie County's bridges have passed the 50-year mark

One structure carries 52.6% of the county's Poor-condition bridge traffic

How Washakie 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

All bridges (61)

Grace Avenue

Wa Cnty Rd 580

Wigwam Hatchery Rd

WYO 432

Wa Cnty Rd R10

WYO 434

Wa Cnty Rd 580A

WYO 432

1405: NEIBER ROAD

Culbertson Avenue

US 16

US 20

US 20

WYO 432

Wa Cnty Rd 81

US 16

Wa Cnty Rd L15

US 16

Wa Cnty Rd 82

WYO 433

Wa Cnty Rd L10

Wa Cnty Rd 47

US 16

US 16

WYO 433

US 16

Wa Cnty Rd 58

US 20

US 16

Wa Cnty Rd 82

US 16

US 16

US 20

WYO 432

Wa Cnty Rd R13

US 16

WYO 434

WYO 433

WYO 433

US 16

US 16

WYO 433

WYO 432

Wa Cnty Rd 80

Wa Cnty Rd L7

WYO 433

WYO 433

Wa Cnty Rd 47

Wa Cnty Rd 82

US 20

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