US Bridges

Miller Street over Lena Gulch

Fair

Jefferson County, Colorado · Just South of 38th Ave · Structure no. WTRE-02-0.90-05

Built
1981
44 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
243
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Miller Street over Lena Gulch is a concrete culvert carrying Miller Street over Lena Gulch in Jefferson County, Colorado. It was built in 1981, so it is 44 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 243 vehicles a day, roughly 2% of them trucks, projected to reach 279 by 2041. The structure is 21 ft (6.4 m) long and 242 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMiller Street
CrossesLena Gulch
LocationJust South of 38th Ave
RouteCity Street 0
Coordinates39.76918, -105.11396
Functional classUrban Minor Arterial

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.1 US tons
Inventory rating52.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width242 ft (73.8 m)
Roadway width240 ft (73.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic243 (2021)
Projected traffic279 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Miller Street over Lena Gulch built?

It was built in 1981, making it 44 years old in 2025.

What condition is Miller Street 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 April 2023.

How much traffic does Miller Street over Lena Gulch carry?

About 243 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Miller Street over Lena Gulch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 242 ft wide.

Who owns Miller Street over Lena Gulch?

It is owned by the City or Municipal Highway Agency.