Total bridges
119
Public highway bridges in Teton County
County profile · official public datasets
Teton County, WY
119 public highway bridges tracked in the FHWA National Bridge Inventory: 31.9% rated Good, 55.5% Fair, 12.6% Poor.
- 119
- Public bridges
- 31.9%
- Good condition
- 12.6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Teton County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 22nd
- of 23 on Poor share
- 12.6%
- Poor-condition share
- 119
- public highway bridges
- 1978
- 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.
Teton County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Teton County ranks #22 of 23 Wyoming counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 12.6%). Teton County, Wyoming contains 119 public highway bridges. Roughly 31.9% are rated “Good,” 55.5% “Fair,” and 12.6% “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.
Good condition
31.9%
38 of 119 rated 7-9
Fair condition
55.5%
66 of 119 rated 5-6
Poor condition
12.6%
15 of 119 rated 4 or below
In-state Poor-share rank
#22 of 23
Among Wyoming counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 119 NBI-tracked bridges by lowest applicable component rating.
Good 31.9% (38)
Fair 55.5% (66)
Poor 12.6% (15)
Teton County's Poor-condition bridges carry 66,930 vehicle crossings a day
That is 18.9% of the county's reported daily bridge traffic on 12.6% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 4,462 crossings a day against 2,237 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 119 of 119 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
52.1% of Teton County's bridges have passed the 50-year mark
62 of the 119 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 31.9% 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 28.7% of the county's Poor-condition bridge traffic
WYO 22 over Snake River, built 1960, carries 19,219 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 66,930 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Teton County's bridges were built
119 bridges with a recorded construction year, grouped by decade
- 1910s 2
1910–1919
2 bridges
- 1920s 1
1920–1929
1 bridges
- 1930s
1930–1939
12 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 10
1950–1959
10 bridges
- 1960s
1960–1969
26 bridges
- 1970s
1970–1979
13 bridges
- 1980s
1980–1989
11 bridges
- 1990s 7
1990–1999
7 bridges
- 2000s
2000–2009
15 bridges
- 2010s
2010–2019
16 bridges
- 2020s 5
2020–2029
5 bridges
What this shows Construction peaked in the 1960s, when 26 of the county's bridges still in the inventory were built, which is 21.8% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1978) matches the Wyoming average (1976).
How Teton County compares with Wyoming's closest counties by inventory size
The 5 Wyoming counties nearest Teton County in number of bridges, with their condition splits. Its 12.6% Poor share is the 6th-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1979 is in line with the group.
Showing the 5 closest of 22 Wyoming counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Uinta County | 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 (this page) | 119 | 31.9% | 55.5% | 12.6% | 1978 |
| Sublette County | 109 | 40.4% | 50.5% | 9.2% | 1986 |
| Goshen County | 106 | 19.8% | 76.4% | 3.8% | 1974 |
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 Teton 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 Teton County, both outside Wyoming so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside WY (119 bridges here).
- Carroll County, AR · 119 bridges
- Grant County, AR · 119 bridges
- Stafford County, KS · 119 bridges
- Grayson County, KY · 119 bridges
Similar average build year
Nearest mean year-built outside WY (1978 here).
- Orange County, CA · avg 1978 · 1,164 bridges
- Sumner County, KS · avg 1978 · 659 bridges
- Allen County, IN · avg 1978 · 613 bridges
- Livingston County, IL · avg 1978 · 579 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (15)
FOREST ROAD 30980
PoorOver: MOSQUITO CREEK
8 MI. SW. OF JACKSON WY, Teton, WY
Built 1956 ADT: 50
FIREHOLE LAKE DRIV
PoorOver: THERMAL AREA DRAINAGE
10 +/- MI. SOUTH OF MADIS, Teton, WY
Built 1935 Load: 3.6 t ADT: 1,500
FOUNTAIN FREIGHT R
PoorOver: FIREHOLE RIVER
12 +/- MI. SOUTH OF MADIS, Teton, WY
Built 1925 Load: 6.3 t ADT: 10
FOREST ROAD 30460
PoorOver: HOBACK RIVER
20 MI. SE. OF JACKSON WY, Teton, WY
Built 1965 Load: 14.9 t ADT: 50
ROAD
PoorOver: DARBY CREEK
NO DATA ENTERED, Teton, WY
Built 1960 Load: 22.0 t ADT: 50
SOUTH ENTRANCE ROA
PoorOver: UNNAMED CREEK
0.5 MI. SOUTH OF WEST THU, Teton, WY
Built 1972 Load: 23.6 t ADT: 1,598
FOREST ROAD 30900
PoorOver: SOUTH FORK FISH CREEK
NO DATA ENTERED, Teton, WY
Built 1966 Load: 23.7 t ADT: 50
GRAND LOOP ROAD
PoorOver: OTTER CREEK
2.5 MI. SOUTH OF CANYON J, Teton, WY
Built 1934 Load: 26.3 t ADT: 1,807
WYO 22
PoorOver: Fish Creek
Jackson - Idaho Line, Teton, WY
Built 1949 Load: 26.3 t ADT: 17,430
WYO 22
PoorOver: Snake River
Jackson - Idaho Line, Teton, WY
Built 1960 Load: 29.0 t ADT: 19,219
SOUTH ENTRANCE ROA
PoorOver: LEWIS RIVER
9.8 MILES NORTH OF SOUTH, Teton, WY
Built 1960 Load: 29.9 t ADT: 3,952
US 89
PoorOver: Flat Creek
Hoback Jct - Jackson, Teton, WY
Built 1938 Load: 29.9 t ADT: 15,368
US 191
PoorOver: Hoback River
Daniel Jct - Hoback Jct, Teton, WY
Built 1966 Load: 34.5 t ADT: 2,444
WEST ENTRANCE ROAD
PoorOver: MADISON RIVER
7.4 MILES EAST OF WEST EN, Teton, WY
Built 1958 Load: 35.4 t ADT: 2,525
Te Cnty Rd 2
PoorOver: Mosquito Creek
T40N R117W S10, Teton, WY
Built 1955 Load: 46.3 t ADT: 877
Read our methodology - how this data is sourced, computed, and verified.
Related
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.