US Bridges

County Road M over Vega Creek

Fair

Washington County, Colorado · 1.8 Mi. N. of Co. Rd. 4 · Structure no. WTNM-06.80

Built
1973
52 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
80 ft
2 main spans
Daily traffic
11
2023 count
Owner
County
County Highway Agency

About this bridge

County Road M over Vega Creek is a steel continuous stringer/multi-beam or girder carrying County Road M over Vega Creek in Washington County, Colorado. It was built in 1973, so it is 52 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 11 vehicles a day, roughly 15% of them trucks, projected to reach 14 by 2042. The structure is 80 ft (24.5 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCounty Road M
CrossesVega Creek
Location1.8 Mi. N. of Co. Rd. 4
RouteCounty Highway 0
Coordinates39.6655, -103.49967
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.5 US tons
Inventory rating23 US tons

Structure

MaterialSteel Continuous
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length80 ft (24.5 m)
Longest span39 ft (12 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2023)
Projected traffic14 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 M over Vega Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is County Road M over Vega 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 October 2023.

How much traffic does County Road M over Vega Creek carry?

About 11 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is County Road M over Vega Creek?

The structure is 80 ft (24.5 m) long with a longest span of 39 ft (12 m) and a deck 24 ft wide.

Who owns County Road M over Vega Creek?

It is owned by the County Highway Agency.