US Bridges

I-25 Nbl over Dry Muddy Creek

Good

Natrona County, Wyoming · Douglas - Casper · Structure no. AHQ

Built
1966
59 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
4,312
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Dry Muddy Creek is a concrete continuous culvert carrying I-25 Nbl over Dry Muddy Creek in Natrona County, Wyoming. It was built in 1966, so it is 59 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,312 vehicles a day, roughly 14% of them trucks, projected to reach 6,037 by 2043. The structure is 36 ft (11.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-25 Nbl
CrossesDry Muddy Creek
LocationDouglas - Casper
RouteInterstate 25
StateWyoming
Coordinates42.84025, -106.15968
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 + Mod
Structure length36 ft (11.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,312 (2024)
Projected traffic6,037 by 2043
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 I-25 Nbl over Dry Muddy Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-25 Nbl over Dry Muddy Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does I-25 Nbl over Dry Muddy Creek carry?

About 4,312 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is I-25 Nbl over Dry Muddy Creek?

The structure is 36 ft (11.1 m) long with a longest span of 10 ft (3 m).

Who owns I-25 Nbl over Dry Muddy Creek?

It is owned by the State Highway Agency.