US Bridges

IRR BIA RTE 101 over Tributary to Shotgun Crk

FairPosted for load

Fremont County, Wyoming · 14.5 KM SE of Mail Camp · Structure no. 00000000000C809

Built
1951
74 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
20 ft
1 main span
Daily traffic
20
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 101 over Tributary to Shotgun Crk is a wood or timber stringer/multi-beam or girder carrying IRR BIA RTE 101 over Tributary to Shotgun Crk in Fremont County, Wyoming. It was built in 1951, so it is 74 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 20 vehicles a day, roughly 10% of them trucks, projected to reach 25 by 2044. The structure is 20 ft (6.2 m) long and 16 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesIRR BIA RTE 101
CrossesTributary to Shotgun Crk
Location14.5 KM SE of Mail Camp
RouteFederal Lands Road 101
StateWyoming
Coordinates43.45944, -108.74383
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.7 US tons
Inventory rating10.4 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 10
Structure length20 ft (6.2 m)
Longest span19 ft (5.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic25 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE 101 over Tributary to Shotgun Crk built?

It was built in 1951, making it 74 years old in 2025.

What condition is IRR BIA RTE 101 over Tributary to Shotgun Crk in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does IRR BIA RTE 101 over Tributary to Shotgun Crk carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is IRR BIA RTE 101 over Tributary to Shotgun Crk?

The structure is 20 ft (6.2 m) long with a longest span of 19 ft (5.8 m) and a deck 16 ft wide.

Who owns IRR BIA RTE 101 over Tributary to Shotgun Crk?

It is owned by the Bureau of Indian Affairs.