US Bridges

US 385 Ml over Black Wolf Creek

Fair

Yuma County, Colorado · 10.7 MI N of JCT US 36 · Structure no. E-28-W

Built
1974
51 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
720
2018 count
Owner
State
State Highway Agency

About this bridge

US 385 Ml over Black Wolf Creek is a prestressed concrete stringer/multi-beam or girder carrying US 385 Ml over Black Wolf Creek in Yuma County, Colorado. It was built in 1974, so it is 51 years old, older than the Colorado average of 42.2 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 720 vehicles a day, roughly 27% of them trucks, projected to reach 886 by 2038. The structure is 101 ft (30.8 m) long and 47 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesUS 385 Ml
CrossesBlack Wolf Creek
Location10.7 MI N of JCT US 36
RouteU.S. Route 385D
Coordinates39.89837, -102.24088
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to 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 rating70.2 US tons
Inventory rating29.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length101 ft (30.8 m)
Longest span98 ft (30 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2018)
Projected traffic886 by 2038
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 385 Ml over Black Wolf Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is US 385 Ml over Black Wolf 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 May 2023.

How much traffic does US 385 Ml over Black Wolf Creek carry?

About 720 vehicles per day (2018 count), of which roughly 27% are trucks.

How long is US 385 Ml over Black Wolf Creek?

The structure is 101 ft (30.8 m) long with a longest span of 98 ft (30 m) and a deck 47 ft wide.

Who owns US 385 Ml over Black Wolf Creek?

It is owned by the State Highway Agency.