US Bridges

Fdr over Little Rock Creek

PoorPosted for load

Park County, Wyoming · 37 Miles NW of Cody Wy · Structure no. 021401000001027

Built
1976
49 years old, rebuilt 1999
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Fdr over Little Rock Creek is a steel stringer/multi-beam or girder carrying Fdr over Little Rock Creek in Park County, Wyoming. It was built in 1976 and reconstructed in 1999, so it is 49 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 2 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 31 ft (9.6 m) long and 9 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFdr
CrossesLittle Rock Creek
Location37 Miles NW of Cody Wy
RouteFederal Lands Road 121.1
StateWyoming
Coordinates44.90049, -109.27984
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; extensive scour has occurred
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating16 US tons
Inventory rating11 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadH 10
Structure length31 ft (9.6 m)
Longest span31 ft (9.4 m)
Deck width9 ft (2.7 m)
Roadway width7 ft (2.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr over Little Rock Creek built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 1999.

What condition is Fdr over Little Rock 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 August 2024.

How much traffic does Fdr over Little Rock Creek carry?

About 50 vehicles per day (latest count).

How long is Fdr over Little Rock Creek?

The structure is 31 ft (9.6 m) long with a longest span of 31 ft (9.4 m) and a deck 9 ft wide.

Who owns Fdr over Little Rock Creek?

It is owned by the U.S. Forest Service.