US Bridges

I-25 Nbl and Sbl over Center Street

Good

Natrona County, Wyoming · Casper Marginal · Structure no. NFH

Built
2024
1 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
120 ft
1 main span
Daily traffic
8,692
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl and Sbl over Center Street is a steel continuous stringer/multi-beam or girder carrying I-25 Nbl and Sbl over Center Street in Natrona County, Wyoming. It was built in 2024, so it is 1 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,692 vehicles a day, roughly 12% of them trucks, projected to reach 12,169 by 2043. The structure is 120 ft (36.6 m) long and 38 ft wide.

CarriesI-25 Nbl and Sbl
CrossesCenter Street
LocationCasper Marginal
RouteInterstate 25
StateWyoming
Coordinates42.85707, -106.32496
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment9: Superior to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span59 ft (17.9 m)
Deck width38 ft (11.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic8,692 (2024)
Projected traffic12,169 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Nbl and Sbl over Center Street built?

It was built in 2024, making it 1 years old in 2025.

What condition is I-25 Nbl and Sbl over Center Street 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 June 2024.

How much traffic does I-25 Nbl and Sbl over Center Street carry?

About 8,692 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is I-25 Nbl and Sbl over Center Street?

The structure is 120 ft (36.6 m) long with a longest span of 59 ft (17.9 m) and a deck 38 ft wide.

Who owns I-25 Nbl and Sbl over Center Street?

It is owned by the State Highway Agency.