US Bridges

Bryan Stock Trail over North Platte River

Good

Natrona County, Wyoming · Casper · Structure no. FEA

Built
1982
43 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
247 ft
3 main spans
Daily traffic
2,887
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bryan Stock Trail over North Platte River is a prestressed concrete stringer/multi-beam or girder carrying Bryan Stock Trail over North Platte River in Natrona County, Wyoming. It was built in 1982, so it is 43 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 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 2,887 vehicles a day, roughly 8% of them trucks, projected to reach 4,042 by 2043. The structure is 247 ft (75.3 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBryan Stock Trail
CrossesNorth Platte River
LocationCasper
RouteCity Street 4127
StateWyoming
Coordinates42.86524, -106.29739
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating37 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length247 ft (75.3 m)
Longest span80 ft (24.4 m)
Deck width76 ft (23.2 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,887 (2024)
Projected traffic4,042 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$83,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bryan Stock Trail over North Platte River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Bryan Stock Trail over North Platte River 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 August 2023.

How much traffic does Bryan Stock Trail over North Platte River carry?

About 2,887 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Bryan Stock Trail over North Platte River?

The structure is 247 ft (75.3 m) long with a longest span of 80 ft (24.4 m) and a deck 76 ft wide.

Who owns Bryan Stock Trail over North Platte River?

It is owned by the City or Municipal Highway Agency.