US Bridges

County Road 34N over Vermillion Creek

Fair

Moffat County, Colorado · SE of ST HWY 318 MP 15 · Structure no. MOF34N-01.10-A

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 34N over Vermillion Creek is a steel stringer/multi-beam or girder carrying County Road 34N over Vermillion Creek in Moffat County, Colorado. It was built in 1987, so it is 38 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 5 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 35 vehicles a day, roughly 45% of them trucks, projected to reach 41 by 2042. The structure is 40 ft (12.3 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty Road 34N
CrossesVermillion Creek
LocationSE of ST HWY 318 MP 15
RouteCounty Highway 0
CountyMoffat County
StateColorado
Coordinates40.75665, -108.8324
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating24.6 US tons
Inventory rating14.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span39 ft (11.8 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic41 by 2042
Trucks45%
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 34N over Vermillion Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is County Road 34N over Vermillion 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 34N over Vermillion Creek carry?

About 35 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is County Road 34N over Vermillion Creek?

The structure is 40 ft (12.3 m) long with a longest span of 39 ft (11.8 m) and a deck 25 ft wide.

Who owns County Road 34N over Vermillion Creek?

It is owned by the County Highway Agency.