US Bridges

Moorhead Avenue over Skunk Creek

Fair

Boulder County, Colorado · 0.1 MI E of 27th Way · Structure no. BOLD-12-0.15-01

Built
1970
55 years old
Condition
Fair
inspected February 2025
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
4,313
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Moorhead Avenue over Skunk Creek is a concrete culvert carrying Moorhead Avenue over Skunk Creek in Boulder County, Colorado. It was built in 1970, so it is 55 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 4,313 vehicles a day, roughly 4% of them trucks, projected to reach 5,176 by 2042. The structure is 25 ft (7.5 m) long and 87 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMoorhead Avenue
CrossesSkunk Creek
Location0.1 MI E of 27th Way
RouteCity Street 0
CountyBoulder County
StateColorado
Coordinates39.99907, -105.25885
Functional classUrban Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 loadUnknown
Structure length25 ft (7.5 m)
Longest span12 ft (3.6 m)
Deck width87 ft (26.4 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,313 (2023)
Projected traffic5,176 by 2042
Trucks4%
Lanes on structure3
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 Moorhead Avenue over Skunk Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Moorhead Avenue over Skunk 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 February 2025.

How much traffic does Moorhead Avenue over Skunk Creek carry?

About 4,313 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Moorhead Avenue over Skunk Creek?

The structure is 25 ft (7.5 m) long with a longest span of 12 ft (3.6 m) and a deck 87 ft wide.

Who owns Moorhead Avenue over Skunk Creek?

It is owned by the City or Municipal Highway Agency.