US Bridges

Wyo 220 over BNSF Railway

Fair

Natrona County, Wyoming · Casper · Structure no. BUO

Built
1969
56 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
345 ft
3 main spans
Daily traffic
14,641
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 220 over BNSF Railway is a steel continuous stringer/multi-beam or girder carrying Wyo 220 over BNSF Railway in Natrona County, Wyoming. It was built in 1969, so it is 56 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 14,641 vehicles a day, roughly 5% of them trucks, projected to reach 20,497 by 2043. The structure is 345 ft (105.2 m) long and 66 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesWyo 220
CrossesBNSF Railway
LocationCasper
RouteState Highway 220
CountyNatrona County
StateWyoming
Coordinates42.85134, -106.33717
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length345 ft (105.2 m)
Longest span141 ft (43 m)
Deck width66 ft (20.2 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,641 (2024)
Projected traffic20,497 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wyo 220 over BNSF Railway built?

It was built in 1969, making it 56 years old in 2025.

What condition is Wyo 220 over BNSF Railway 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 April 2024.

How much traffic does Wyo 220 over BNSF Railway carry?

About 14,641 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Wyo 220 over BNSF Railway?

The structure is 345 ft (105.2 m) long with a longest span of 141 ft (43 m) and a deck 66 ft wide.

Who owns Wyo 220 over BNSF Railway?

It is owned by the State Highway Agency.