US Bridges

Wyo 59 over Hay Creek

Fair

Campbell County, Wyoming · Reno JCT - Gillette · Structure no. DCG

Built
1977
48 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
122 ft
4 main spans
Daily traffic
4,682
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 59 over Hay Creek is a steel continuous stringer/multi-beam or girder carrying Wyo 59 over Hay Creek in Campbell County, Wyoming. It was built in 1977, so it is 48 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 4,682 vehicles a day, roughly 19% of them trucks, projected to reach 6,555 by 2043. The structure is 122 ft (37.2 m) long and 39 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesWyo 59
CrossesHay Creek
LocationReno JCT - Gillette
RouteState Highway 59
CountyCampbell County
StateWyoming
Coordinates43.83152, -105.46631
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
Deck7 GoodSome minor problems.
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating47 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span33 ft (10.1 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,682 (2024)
Projected traffic6,555 by 2043
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$7,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 59 over Hay Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Wyo 59 over Hay Creek 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 July 2024.

How much traffic does Wyo 59 over Hay Creek carry?

About 4,682 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is Wyo 59 over Hay Creek?

The structure is 122 ft (37.2 m) long with a longest span of 33 ft (10.1 m) and a deck 39 ft wide.

Who owns Wyo 59 over Hay Creek?

It is owned by the State Highway Agency.