US Bridges

US 36 Ml over Vega Creek

Poor

Washington County, Colorado · 4.8 MI E of JCT SH 71 · Structure no. F-22-V

Built
1938
87 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
71 ft
3 main spans
Daily traffic
700
2020 count
Owner
State
State Highway Agency

About this bridge

US 36 Ml over Vega Creek is a wood or timber stringer/multi-beam or girder carrying US 36 Ml over Vega Creek in Washington County, Colorado. It was built in 1938, so it is 87 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 700 vehicles a day, roughly 25% of them trucks, projected to reach 910 by 2040. The structure is 71 ft (21.5 m) long and 30 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesUS 36 Ml
CrossesVega Creek
Location4.8 MI E of JCT SH 71
RouteU.S. Route 36D
Coordinates39.73974, -103.50342
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be 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 alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating35.4 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length71 ft (21.5 m)
Longest span23 ft (7 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2020)
Projected traffic910 by 2040
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

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 36 Ml over Vega Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is US 36 Ml over Vega Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does US 36 Ml over Vega Creek carry?

About 700 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is US 36 Ml over Vega Creek?

The structure is 71 ft (21.5 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.

Who owns US 36 Ml over Vega Creek?

It is owned by the State Highway Agency.