US Bridges

Wyo 220 over North Platte River

Fair

Natrona County, Wyoming · 13 MI SW of Casper · Structure no. LIK

Built
2002
23 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
360 ft
3 main spans
Daily traffic
3,090
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 220 over North Platte River is a steel continuous stringer/multi-beam or girder carrying Wyo 220 over North Platte River in Natrona County, Wyoming. It was built in 2002, so it is 23 years old, younger 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 5 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 3,090 vehicles a day, roughly 20% of them trucks, projected to reach 4,326 by 2043. The structure is 360 ft (109.7 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesWyo 220
CrossesNorth Platte River
Location13 MI SW of Casper
RouteState Highway 220
CountyNatrona County
StateWyoming
Coordinates42.63788, -106.61921
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating59.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length360 ft (109.7 m)
Longest span129 ft (39.3 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,090 (2024)
Projected traffic4,326 by 2043
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 220 over North Platte River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Wyo 220 over North Platte River 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 March 2024.

How much traffic does Wyo 220 over North Platte River carry?

About 3,090 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is Wyo 220 over North Platte River?

The structure is 360 ft (109.7 m) long with a longest span of 129 ft (39.3 m) and a deck 43 ft wide.

Who owns Wyo 220 over North Platte River?

It is owned by the State Highway Agency.