US Bridges

Cole Blvd | Denver over Lena Gulch

Fair

Jefferson County, Colorado · 0.1 MI N of Colfax · Structure no. G-21-107

Built
1974
51 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
7,081
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cole Blvd | Denver over Lena Gulch is a concrete culvert carrying Cole Blvd | Denver over Lena Gulch in Jefferson 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 7,081 vehicles a day, roughly 4% of them trucks, projected to reach 8,143 by 2041. The structure is 25 ft (7.6 m) long and 301 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCole Blvd | Denver
CrossesLena Gulch
Location0.1 MI N of Colfax
RouteCounty Highway 0
CountyJefferson County
StateColorado
Coordinates39.73849, -105.15704
Functional classUrban 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width301 ft (91.6 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,081 (2021)
Projected traffic8,143 by 2041
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Cole Blvd | Denver over Lena Gulch built?

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

What condition is Cole Blvd | Denver over Lena Gulch 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 February 2025.

How much traffic does Cole Blvd | Denver over Lena Gulch carry?

About 7,081 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Cole Blvd | Denver over Lena Gulch?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 301 ft wide.

Who owns Cole Blvd | Denver over Lena Gulch?

It is owned by the City or Municipal Highway Agency.