Total bridges
177
Public highway bridges in Fremont County
County profile · official public datasets
Fremont County, WY
177 public highway bridges tracked in the FHWA National Bridge Inventory: 47.5% rated Good, 46.3% Fair, 6.2% Poor.
- 177
- Public bridges
- 47.5%
- Good condition
- 6.2%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Fremont County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- 12th
- of 23 on Poor share
- 6.2%
- Poor-condition share
- 177
- public highway bridges
- 1981
- 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.
Fremont County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Fremont County ranks #12 of 23 Wyoming counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.2%). Fremont County, Wyoming contains 177 public highway bridges. Roughly 47.5% are rated “Good,” 46.3% “Fair,” and 6.2% “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
47.5%
84 of 177 rated 7-9
Fair condition
46.3%
82 of 177 rated 5-6
Poor condition
6.2%
11 of 177 rated 4 or below
In-state Poor-share rank
#12 of 23
Among Wyoming counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 177 NBI-tracked bridges by lowest applicable component rating.
Good 47.5% (84)
Fair 46.3% (82)
Poor 6.2% (11)
Fremont County's Poor-condition bridges carry 990 vehicle crossings a day
That is 0.4% of the county's reported daily bridge traffic on 6.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 90 crossings a day against 1,016 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 177 of 177 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
33.3% of Fremont County's bridges have passed the 50-year mark
59 of the 177 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 47.5% 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 26.4% of the county's Poor-condition bridge traffic
Fr Cnty Rd 480 over Pilot Canal, built 1950, carries 261 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 11-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 990 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Fremont County's bridges were built
177 bridges with a recorded construction year, grouped by decade
- 1920s 5
1920–1929
5 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 3
1940–1949
3 bridges
- 1950s 15
1950–1959
15 bridges
- 1960s 14
1960–1969
14 bridges
- 1970s
1970–1979
37 bridges
- 1980s
1980–1989
39 bridges
- 1990s
1990–1999
19 bridges
- 2000s
2000–2009
18 bridges
- 2010s
2010–2019
19 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1980s, when 39 of the county's bridges still in the inventory were built, which is 22% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1981, 5 years newer than the Wyoming average of 1976.
How Fremont County compares with Wyoming's closest counties by inventory size
The 5 Wyoming counties nearest Fremont County in number of bridges, with their condition splits. Its 6.2% Poor share is the 4th-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1975 is 6 years newer.
Showing the 5 closest of 22 Wyoming counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Sweetwater County | 191 | 28.8% | 62.8% | 8.4% | 1976 |
| Park County | 187 | 37.4% | 58.3% | 4.3% | 1979 |
| Fremont County (this page) | 177 | 47.5% | 46.3% | 6.2% | 1981 |
| Crook County | 176 | 30.7% | 67.6% | 1.7% | 1974 |
| Sheridan County | 170 | 23.5% | 71.8% | 4.7% | 1975 |
| Platte County | 160 | 31.3% | 60% | 8.8% | 1970 |
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 Fremont 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 Fremont County, both outside Wyoming so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside WY (177 bridges here).
- Hale County, AL · 177 bridges
- Macon County, AL · 177 bridges
- Washington County, AL · 177 bridges
- Seminole County, FL · 177 bridges
Similar average build year
Nearest mean year-built outside WY (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (82)
IRR BIA RTE 280
FairOver: BIG WIND RIVER
1KM N US 26/WILDERNESS RD, Fremont, WY
Built 1920 Load: 3.9 t ADT: 20
Clendenning Street
FairOver: Horse Creek
Dubois Streets, Fremont, WY
Built 1937 Load: 8.8 t ADT: 444
IRR BIA RTE 101
FairOver: TRIBUTARY TO SHOTGUN CRK
14.5 KM SE OF MAIL CAMP, Fremont, WY
Built 1951 Load: 9.4 t ADT: 20
Fr Cnty Rd 298
FairOver: Dry Creek
T03N R001W S18, Fremont, WY
Built 1932 Load: 11.1 t ADT: 26
Fr Cnty Rd 238
FairOver: Big Wind River
2 Mi. S.E. Of Dubois, Fremont, WY
Built 1921 Load: 14.4 t ADT: 80
FDR
FairOver: LOUIS CREEK
NO DATA ENTERED, Fremont, WY
Built 1953 Load: 14.6 t ADT: 50
3rd Street
FairOver: Big Wind River
Dubois, Fremont, WY
Built 1935 Load: 15.3 t ADT: 270
FDR
FairOver: HORSE CREEK
NO DATA ENTERED, Fremont, WY
Built 1955 Load: 16.8 t ADT: 50
FDR
FairOver: BURROUGHS CREEK
NO DATA ENTERED, Fremont, WY
Built 1956 Load: 20.4 t ADT: 50
Access Road
FairOver: Boysen Dam Spillway
15.9 mi S. of Thermopolis, Fremont, WY
Built 1948 Load: 20.7 t ADT: 5
Fr Cnty Rd 442
FairOver: Hornecker Creek
5 Mi Sw Of Lander, Fremont, WY
Built 1950 Load: 20.9 t ADT: 77
2302: HUDSON-ATLAN
FairOver: STRAWBERRY CREEK
12 Mi E S. Pass City WY, Fremont, WY
Built 2005 Load: 21.4 t ADT: 40
IRR BIA RTE 31
FairOver: MEADOW CREEK
1.5 KM SE OF CROWHEART, Fremont, WY
Built 1970 Load: 21.7 t ADT: 50
IRR BIA RTE 46
FairOver: SUB AGENCY DITCH
14.5 KM SW OF RIVERTON, Fremont, WY
Built 1970 Load: 24.5 t ADT: 300
IRR BIA RTE 46
FairOver: SUB AGENCY DITCH
11.3 KM SW OF RIVERTON, Fremont, WY
Built 1970 Load: 24.5 t ADT: 300
IRR BIA RTE 101
FairOver: LOWER MUDDY CREEK
0.8 KM SW OF JCT 18 & 101, Fremont, WY
Built 1977 Load: 24.5 t ADT: 50
IRR BIA RTE 16
FairOver: COOLIDGE CANAL
11.3KM EAST OF WIND RIVER, Fremont, WY
Built 1979 Load: 24.5 t ADT: 300
US 26
FairOver: Leclair Canal No 2
Diversion D Jt - Riverton, Fremont, WY
Built 1978 Load: 28.1 t ADT: 5,263
Fr Cnty Rd 286
FairOver: Sweetwater River
10 Mi Ne Of Jeffrey City, Fremont, WY
Built 1984 Load: 29.0 t ADT: 127
FDR
FairOver: BROOKS LAKE CREEK
NO DATA ENTERED, Fremont, WY
Built 1973 Load: 29.8 t ADT: 50
US 287
FairOver: Little Popo Agie River
Muddy Gap Jct-WYO 28 Jct, Fremont, WY
Built 1969 Load: 30.8 t ADT: 602
WYO 789
FairOver: Wind River
Lander - Riverton, Fremont, WY
Built 1968 Load: 30.8 t ADT: 12,808
US 287
FairOver: Twin Creek
Muddy Gap Jct-WYO 28 Jct, Fremont, WY
Built 1973 Load: 30.8 t ADT: 602
US 26
FairOver: Poison Creek
Riverton - Shoshoni, Fremont, WY
Built 1977 Load: 30.8 t ADT: 3,460
WYO 789
FairOver: Little Wind River
Lander - Riverton, Fremont, WY
Built 1976 Load: 31.0 t ADT: 3,514
Fr Cnty Rd 432
FairOver: Five Mile Creek
T03N R004E S27, Fremont, WY
Built 1975 Load: 31.7 t ADT: 168
US 287
FairOver: Sweetwater River
Muddy Gap Jct-WYO 28 Jct, Fremont, WY
Built 1977 Load: 31.8 t ADT: 1,283
US 287
FairOver: Cottonwood Creek
Muddy Gap-Lander Road, Fremont, WY
Built 1985 Load: 31.8 t ADT: 546
Village Drive
FairOver: Wyoming Central Canal
South West Riverton, Fremont, WY
Built 1975 Load: 32.0 t ADT: 1,249
IRR BIA RTE 12
FairOver: LITTLE WIND RIVER
21.7 KM WEST OF RIVERTON, Fremont, WY
Built 1973 Load: 32.7 t ADT: 35
US 287
FairOver: Squaw Creek
Lander - Diversion Dam Jt, Fremont, WY
Built 1961 Load: 32.7 t ADT: 9,923
US 287
FairOver: Twin Creek
Muddy Gap Jct-WYO 28 Jct, Fremont, WY
Built 1972 Load: 32.7 t ADT: 602
US 20
FairOver: Bad Water Creek
Shoshoni - Thermopolis, Fremont, WY
Built 1970 Load: 32.7 t ADT: 2,615
WYO 28
FairOver: Little Popo Agie River
Farson - Jct Us 287, Fremont, WY
Built 1968 Load: 32.7 t ADT: 1,751
WYO 136
FairOver: Unnamed Draw
Riverton - Gas Hills, Fremont, WY
Built 1961 Load: 32.7 t ADT: 57
US 287
FairOver: Little Wind River
Lander - Diversion Dam Jt, Fremont, WY
Built 1963 Load: 32.7 t ADT: 635
Fr Cnty Rd 448
FairOver: Pilot Canal
22 Mi. N.W. Of Riverton, Fremont, WY
Built 1979 Load: 32.7 t ADT: 80
Fr Cnty Rd 20
FairOver: M F Popo Agie Overflow
0.5 Mi. S. Of Lander, Fremont, WY
Built 1978 Load: 32.7 t ADT: 426
E Pershing Avenue
FairOver: Wyoming Central Canal
Pershing Avenue Riverton, Fremont, WY
Built 1965 Load: 32.7 t ADT: 2,512
E Welty Street
FairOver: Horse Creek
Dubois Streets, Fremont, WY
Built 1979 Load: 32.7 t ADT: 173
Smith Street
FairOver: Squaw Creek
Smith Court Lander, Fremont, WY
Built 1983 Load: 32.7 t ADT: 1,277
US 287
FairOver: Ice Slough Creek
Muddy Gap - Lander, Fremont, WY
Built 1985 Load: 32.7 t ADT: 1,283
US 26
FairOver: Sand Draw
Dubois-Diversion Dam Jct, Fremont, WY
Built 1986 Load: 32.7 t ADT: 1,554
US 26
FairOver: Little Dry Creek
Dubois-Diversion Dam Jct., Fremont, WY
Built 1987 Load: 32.7 t ADT: 1,554
US 26
FairOver: Smith Draw
Dubois-Diversion Dam Jct., Fremont, WY
Built 1987 Load: 32.7 t ADT: 1,554
WYO 789
FairOver: Hudson Draw
Lander-Hudson, Fremont, WY
Built 1956 Load: 32.7 t ADT: 4,232
US 20
FairOver: Birdseye Creek
Thermopolis-Shoshoni, Fremont, WY
Built 1952 Load: 32.7 t ADT: 2,647
US 26
FairOver: Big Wind River
Moran Jct-Dubois, Fremont, WY
Built 1993 Load: 32.7 t ADT: 2,037
US 26
FairOver: Big Wind River
Moran Jct-Dubois, Fremont, WY
Built 1993 Load: 32.7 t ADT: 2,037
US 287
FairOver: Iiams Creek
Lander Southeast, Fremont, WY
Built 1982 Load: 32.7 t ADT: 3,277
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.