US Bridges

Enzi Drive over Donkey Creek

Fair

Campbell County, Wyoming · 1 MI South of Gillette · Structure no. LEJ

Built
1997
28 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
10,480
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Enzi Drive over Donkey Creek is a concrete continuous culvert carrying Enzi Drive over Donkey Creek in Campbell County, Wyoming. It was built in 1997, so it is 28 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 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 10,480 vehicles a day, roughly 1% of them trucks, projected to reach 14,672 by 2043. The structure is 31 ft (9.5 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesEnzi Drive
CrossesDonkey Creek
Location1 MI South of Gillette
RouteCity Street 4620
StateWyoming
Coordinates44.26209, -105.5096
Functional classUrban Minor 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length31 ft (9.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,480 (2024)
Projected traffic14,672 by 2043
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Enzi Drive over Donkey Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Enzi Drive over Donkey 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 February 2025.

How much traffic does Enzi Drive over Donkey Creek carry?

About 10,480 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Enzi Drive over Donkey Creek?

The structure is 31 ft (9.5 m) long with a longest span of 10 ft (3 m).

Who owns Enzi Drive over Donkey Creek?

It is owned by the City or Municipal Highway Agency.