US Bridges

County Road 15 over Milk Creek

Fair

Rio Blanco County, Colorado · 0.8 M S of Moffat CO Line · Structure no. RIOB-015-16.75

Built
1985
40 years old
Condition
Fair
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
31 ft
1 main span
Daily traffic
41
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 15 over Milk Creek is a steel girder and floorbeam system carrying County Road 15 over Milk Creek in Rio Blanco County, Colorado. It was built in 1985, so it is 40 years old, younger 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 41 vehicles a day, roughly 31% of them trucks, projected to reach 50 by 2043. The structure is 31 ft (9.3 m) long and 28 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesCounty Road 15
CrossesMilk Creek
Location0.8 M S of Moffat CO Line
RouteCounty Highway 0
CountyRio Blanco County
StateColorado
Coordinates40.21161, -107.67705
Functional classRural Minor Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating15.2 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length31 ft (9.3 m)
Longest span29 ft (8.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2023)
Projected traffic50 by 2043
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road 15 over Milk Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is County Road 15 over Milk 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 September 2024.

How much traffic does County Road 15 over Milk Creek carry?

About 41 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is County Road 15 over Milk Creek?

The structure is 31 ft (9.3 m) long with a longest span of 29 ft (8.7 m) and a deck 28 ft wide.

Who owns County Road 15 over Milk Creek?

It is owned by the County Highway Agency.