US Bridges

Timberline Road over Larimer and Weld Canal

Fair

Larimer County, Colorado · 0.4 MI N of Vine Drive · Structure no. FCSUMVW-0.5-VIN

Built
1988
37 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
49 ft
2 main spans
Daily traffic
5,291
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Timberline Road over Larimer and Weld Canal is a concrete culvert carrying Timberline Road over Larimer and Weld Canal in Larimer County, Colorado. It was built in 1988, so it is 37 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 5,291 vehicles a day, roughly 19% of them trucks, projected to reach 6,613 by 2042. The structure is 49 ft (15 m) long and 87 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesTimberline Road
CrossesLarimer and Weld Canal
Location0.4 MI N of Vine Drive
RouteCity Street 0
CountyLarimer County
StateColorado
Coordinates40.60273, -105.02926
Functional classUrban Other Principal 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 rating45.3 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length49 ft (15 m)
Longest span24 ft (7.4 m)
Deck width87 ft (26.6 m)
Roadway width70 ft (21.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,291 (2022)
Projected traffic6,613 by 2042
Trucks19%
Lanes on structure2
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

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 Timberline Road over Larimer and Weld Canal built?

It was built in 1988, making it 37 years old in 2025.

What condition is Timberline Road over Larimer and Weld Canal 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 Timberline Road over Larimer and Weld Canal carry?

About 5,291 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is Timberline Road over Larimer and Weld Canal?

The structure is 49 ft (15 m) long with a longest span of 24 ft (7.4 m) and a deck 87 ft wide.

Who owns Timberline Road over Larimer and Weld Canal?

It is owned by the City or Municipal Highway Agency.