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.

Total bridges

119

Public highway bridges in Teton County

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

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).

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

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.

Bridge inventory size and condition shares for Teton County and the 5 Wyoming counties closest to it in inventory size
County Bridges Poor
Uinta County 132 11.4%
Lincoln County 129 5.4%
Albany County 124 1.6%
Teton County (this page) 119 12.6%
Sublette County 109 9.2%
Goshen County 106 3.8%

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).

Similar average build year

Nearest mean year-built outside WY (1978 here).

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

All 119 Good 38 Fair 66 Poor 15

All bridges (119)

W Snow King Ave

Fair

Over: Flat Creek

Jackson, Teton, WY

Built 1985 Load: 38.1 t ADT: 5,619

US 89

Fair

Over: Flat Creek

Jackson, Teton, WY

Built 1969 Load: 39.0 t ADT: 32,796

US 26

Fair

Over: Unnamed Draw

Moran Junction - Dubois, Teton, WY

Built 2009 Load: 39.9 t ADT: 1,612

U.S. ROUTE 89

Fair

Over: SNAKE RIVER

2 miles south of North En, Teton, WY

Built 1950 Load: 43.5 t ADT: 5,000

GRAND LOOP ROAD

Fair

Over: TOWER CREEK

18.2 MI. EAST OF MAMMOTH, Teton, WY

Built 1935 Load: 44.4 t ADT: 1,807

GRAND TETON NP RD

Fair

Over: SNAKE RIVER

JACKSON LAKE DAM, Teton, WY

Built 1911 Load: 45.0 t ADT: 1,800

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Teton, WY

Built 1970 Load: 45.4 t ADT: 2,444

WYO 390

Fair

Over: Granite Creek

Wilson-Teton Village, Teton, WY

Built 2003 Load: 45.4 t ADT: 4,815

US 26

Fair

Over: Snake River

Hoback Jct - Jackson, Teton, WY

Built 2022 Load: 45.4 t ADT: 11,439

US 191

Fair

Over: Hoback River

Daniel Jct - Hoback Jct, Teton, WY

Built 1970 Load: 49.0 t ADT: 2,444

Te Cnty Rd 5

Fair

Over: Buffalo Fork River

13 Mi. E. Of Moran Jct, Teton, WY

Built 1998 Load: 49.9 t ADT: 515

SOUTH ENTRANCE ROA

Fair

Over: CRAWFISH CREEK

1.2 MILES NORTH OF SOUTH, Teton, WY

Built 1934 Load: 51.7 t ADT: 3,952

GRAND LOOP ROAD

Fair

Over: BRIDGE BAY INLET

2.0 MI. SOUTH OF LAKE JCT, Teton, WY

Built 1961 Load: 54.4 t ADT: 1,807

U.S. ROUTE 89

Fair

Over: CHRISTIAN CREEK

5 miles west of Moran Jun, Teton, WY

Built 1963 Load: 58.0 t ADT: 5,000

U.S. ROUTE 89

Fair

Over: PACIFIC CREEK

1.5 miles west of Moran J, Teton, WY

Built 1958 Load: 58.0 t ADT: 5,000

GRAND LOOP ROAD

Fair

Over: GIBBON RIVER

4.9 MI. SOUTH OF NORRIS J, Teton, WY

Built 1936 Load: 67.1 t ADT: 1,807

NO DATA ENTERED

Good

Over: GROS VENTRE RIVER

NO DATA ENTERED, Teton, WY

Built 2009 ADT: 75

NO DATA ENTERED

Good

Over: DARBY CREEK

NO DATA ENTERED, Teton, WY

Built 2019 ADT: 50

FOREST ROAD 31000

Good

Over: FALL CREEK

11 MI. S. OF JACKSON WY, Teton, WY

Built 2014 Load: 17.2 t ADT: 50

ROAD

Good

Over: N. LEIGH CREEK

NO DATA ENTERED, Teton, WY

Built 1974 Load: 18.5 t ADT: 50

FDR 30500

Good

Over: LITTLE GRANITE CREEK

T39N R113W S 34, Teton, WY

Built 2000 Load: 22.7 t ADT: 450

ROAD

Good

Over: SOUTH BOONE CREEK

NO DATA ENTERED, Teton, WY

Built 1974 Load: 23.3 t ADT: 24

Te Cnty Rd 3

Good

Over: Fish Creek

Wilson117W S22, Teton, WY

Built 1965 Load: 23.6 t ADT: 1,015

LONE STAR GEYSER R

Good

Over: FIREHOLE RIVER

14.9 MI. NW OF WEST THUMB, Teton, WY

Built 1915 Load: 24.5 t ADT: 250

FOREST ROAD 30410

Good

Over: GROS VENTRE RIVER

24 MI. NE. OF JACKSON WY, Teton, WY

Built 2011 Load: 26.2 t ADT: 100

ROAD

Good

Over: BRANCH OF N. TETON CR.

NO DATA ENTERED, Teton, WY

Built 1984 Load: 26.2 t ADT: 72

ROAD

Good

Over: N. LEIGH CREEK

NO DATA ENTERED, Teton, WY

Built 1983 Load: 29.2 t ADT: 50

FOUNTAIN FLAT DRIV

Good

Over: NEZ PERCE CREEK

5.9 MI. SOUTH OF MADISON, Teton, WY

Built 1997 Load: 29.9 t ADT: 500

ROAD

Good

Over: CASCADE CREEK

NO DATA ENTERED, Teton, WY

Built 1992 Load: 30.1 t ADT: 36

US 26

Good

Over: Wildlife Crossing

Hoback Jct - Jackson, Teton, WY

Built 2022 Load: 32.4 t ADT: 11,439

GRAND LOOP ROAD

Good

Over: STREAM

2.1 MI. SOUTH OF LAKE JCT, Teton, WY

Built 1961 Load: 32.7 t ADT: 4,500

US 26

Good

Over: Lava Creek

Moran Jct.-Dubois, Teton, WY

Built 1985 Load: 32.7 t ADT: 1,612

WYO 390

Good

Over: Granite Creek

Wil-Grand Teton Natl Park, Teton, WY

Built 1972 Load: 32.7 t ADT: 1,804

Te Cnty Rd 44

Good

Over: Spring Creek

2 Mi Sw Of Jackson, Teton, WY

Built 2002 Load: 32.7 t ADT: 380

US 26

Good

Over: Wildlife Crossing

Moran Jct - Dubois, Teton, WY

Built 2011 Load: 32.7 t ADT: 1,612

Te Cnty Rd 1

Good

Over: Flat Creek

5 Mi Sw Of Jackson, Teton, WY

Built 2011 Load: 33.6 t ADT: 2,388

Te Cnty Rd 4

Good

Over: Gros Ventre River

T42N R116W S34, Teton, WY

Built 2018 Load: 35.3 t ADT: 886

US 89

Good

Over: Flat Creek

Hoback Jct - Jackson, Teton, WY

Built 2019 Load: 35.6 t ADT: 11,439

GRAND LOOP ROAD

Good

Over: GIBBON RIVER

7.5 MI. NE OF MADISON JCT, Teton, WY

Built 2002 Load: 38.1 t ADT: 1,807

Te Cnty Rd 3

Good

Over: Fish Creek

Wilson Square Road, Teton, WY

Built 1995 Load: 38.1 t ADT: 1,015

US 26

Good

Over: Black Rock Creek

Moran Jct - Dubois, Teton, WY

Built 2011 Load: 40.5 t ADT: 1,612

US 89

Good

Over: Wildlife Crossing

Hoback Jct - Jackson, Teton, WY

Built 2017 Load: 40.5 t ADT: 11,154

US 26

Good

Over: Wildlife Crossing

Hoback Jct - Jackson, Teton, WY

Built 2022 Load: 40.5 t ADT: 11,439

US 89

Good

Over: Snake River

Hoback Jct - Jackson, Teton, WY

Built 2019 Load: 42.4 t ADT: 11,439

GRAND LOOP ROAD

Good

Over: GIBBON RIVER

5.1 MI. NE OF MADISON JCT, Teton, WY

Built 2010 Load: 42.6 t ADT: 1,807

MOOSE WILSON ROAD

Good

Over: LAKE CREEK

0.6 miles west of Moose J, Teton, WY

Built 2005 Load: 45.4 t ADT: 200

EAST ENTRANCE ROAD

Good

Over: SEDGE CREEK

18.4 MI. WEST OF EAST ENT, Teton, WY

Built 1997 Load: 47.2 t ADT: 1,286

GRAND LOOP ROAD

Good

Over: ISA LAKE

9.8 MI. NW OF WEST THUMB, Teton, WY

Built 2015 Load: 49.0 t ADT: 1,807

Te Cnty Rd 33

Good

Over: Hoback River

Hoback Junction, Teton, WY

Built 2017 Load: 51.5 t ADT: 351

INDIAN CREEK CAMPG

Good

Over: OBSIDIAN CREEK

8.4 MI. SOUTH OF MAMMOTH, Teton, WY

Built 2012 Load: 52.6 t ADT: 75

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.