US Bridges

Harlan Circle over Sanderson Gulch

Fair

Jefferson County, Colorado · 0.05 MI North of Jewell · Structure no. LKWD-02-0.05-02

Built
2002
23 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
245
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Harlan Circle over Sanderson Gulch is a concrete culvert carrying Harlan Circle over Sanderson Gulch in Jefferson County, Colorado. It was built in 2002, so it is 23 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 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 245 vehicles a day, projected to reach 281 by 2041. The structure is 34 ft (10.4 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHarlan Circle
CrossesSanderson Gulch
Location0.05 MI North of Jewell
RouteCity Street 0
CountyJefferson County
StateColorado
Coordinates39.68334, -105.06179
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 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 rating93.4 US tons
Inventory rating56 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length34 ft (10.4 m)
Longest span16 ft (4.9 m)
Deck width39 ft (11.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic245 (2021)
Projected traffic281 by 2041
Trucks0%
Lanes on structure2
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 Harlan Circle over Sanderson Gulch built?

It was built in 2002, making it 23 years old in 2025.

What condition is Harlan Circle over Sanderson 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 Harlan Circle over Sanderson Gulch carry?

About 245 vehicles per day (2021 count).

How long is Harlan Circle over Sanderson Gulch?

The structure is 34 ft (10.4 m) long with a longest span of 16 ft (4.9 m) and a deck 39 ft wide.

Who owns Harlan Circle over Sanderson Gulch?

It is owned by the City or Municipal Highway Agency.