US Bridges

Na Cnty RD 125 over Middle Fork Casper Creek

Fair

Natrona County, Wyoming · 19 Miles N.W. of Casper · Structure no. DJQ

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
29 ft
3 main spans
Daily traffic
124
2024 count
Owner
County
County Highway Agency

About this bridge

Na Cnty RD 125 over Middle Fork Casper Creek is a concrete continuous culvert carrying Na Cnty RD 125 over Middle Fork Casper Creek in Natrona County, Wyoming. It was built in 1973, so it is 52 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 124 vehicles a day, roughly 37% of them trucks, projected to reach 174 by 2043. The structure is 29 ft (8.9 m) long. If it were closed, the detour would be 19.9 mi (32 km).

CarriesNa Cnty RD 125
CrossesMiddle Fork Casper Creek
Location19 Miles N.W. of Casper
RouteCounty Highway 125
StateWyoming
Coordinates43.01863, -106.61436
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.9 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic124 (2024)
Projected traffic174 by 2043
Trucks37%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$41,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Na Cnty RD 125 over Middle Fork Casper Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Na Cnty RD 125 over Middle Fork Casper Creek 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 August 2023.

How much traffic does Na Cnty RD 125 over Middle Fork Casper Creek carry?

About 124 vehicles per day (2024 count), of which roughly 37% are trucks.

How long is Na Cnty RD 125 over Middle Fork Casper Creek?

The structure is 29 ft (8.9 m) long with a longest span of 8 ft (2.4 m).

Who owns Na Cnty RD 125 over Middle Fork Casper Creek?

It is owned by the County Highway Agency.