US Bridges

IRR BIA RTE 101 over Shotgun Creek

PoorPosted for load

Fremont County, Wyoming · 15.3 KM SE of Mail Camp · Structure no. 00000000000C810

Built
1951
74 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
30
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 101 over Shotgun Creek is a wood or timber stringer/multi-beam or girder carrying IRR BIA RTE 101 over Shotgun Creek 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 35 by 2044. The structure is 58 ft (17.8 m) long and 15 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

CarriesIRR BIA RTE 101
CrossesShotgun Creek
Location15.3 KM SE of Mail Camp
RouteFederal Lands Road 101
StateWyoming
Coordinates43.45456, -108.74247
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30.6 US tons
Inventory rating22.3 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 10
Structure length58 ft (17.8 m)
Longest span19 ft (5.8 m)
Deck width15 ft (4.7 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic35 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$350,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE 101 over Shotgun Creek built?

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

What condition is IRR BIA RTE 101 over Shotgun Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does IRR BIA RTE 101 over Shotgun Creek carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is IRR BIA RTE 101 over Shotgun Creek?

The structure is 58 ft (17.8 m) long with a longest span of 19 ft (5.8 m) and a deck 15 ft wide.

Who owns IRR BIA RTE 101 over Shotgun Creek?

It is owned by the Bureau of Indian Affairs.