US Bridges

South Golden Road over Lena Gulch Tributary

Fair

Jefferson County, Colorado · 0.1 MI W of I70 · Structure no. F-21-91

Built
1978
47 years old
Condition
Fair
inspected March 2025
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
596
2021 count
Owner
County
County Highway Agency

About this bridge

South Golden Road over Lena Gulch Tributary is a concrete culvert carrying South Golden Road over Lena Gulch Tributary in Jefferson County, Colorado. It was built in 1978, so it is 47 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 596 vehicles a day, roughly 2% of them trucks, projected to reach 686 by 2041. The structure is 30 ft (9 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSouth Golden Road
CrossesLena Gulch Tributary
Location0.1 MI W of I70
RouteCounty Highway 0
CountyJefferson County
StateColorado
Coordinates39.73409, -105.16806
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length30 ft (9 m)
Longest span14 ft (4.3 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic596 (2021)
Projected traffic686 by 2041
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 South Golden Road over Lena Gulch Tributary built?

It was built in 1978, making it 47 years old in 2025.

What condition is South Golden Road over Lena Gulch Tributary 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 March 2025.

How much traffic does South Golden Road over Lena Gulch Tributary carry?

About 596 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is South Golden Road over Lena Gulch Tributary?

The structure is 30 ft (9 m) long with a longest span of 14 ft (4.3 m) and a deck 52 ft wide.

Who owns South Golden Road over Lena Gulch Tributary?

It is owned by the County Highway Agency.