US Bridges

Timberline Road over Spring Creek

Fair

Larimer County, Colorado · 100 Ft S of Prospect Rd. · Structure no. FCTMB-0.1-PRST

Built
1986
39 years old, rebuilt 2006
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
88 ft
2 main spans
Daily traffic
36,342
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Timberline Road over Spring Creek is a concrete continuous slab carrying Timberline Road over Spring Creek in Larimer County, Colorado. It was built in 1986 and reconstructed in 2006, so it is 39 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 36,342 vehicles a day, roughly 7% of them trucks, projected to reach 45,428 by 2042. The structure is 88 ft (26.9 m) long and 114 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesTimberline Road
CrossesSpring Creek
Location100 Ft S of Prospect Rd.
RouteCity Street 0
CountyLarimer County
StateColorado
Coordinates40.56642, -105.03952
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating73.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length88 ft (26.9 m)
Longest span43 ft (13 m)
Deck width114 ft (34.7 m)
Roadway width98 ft (29.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,342 (2023)
Projected traffic45,428 by 2042
Trucks7%
Lanes on structure7
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 Timberline Road over Spring Creek built?

It was built in 1986, making it 39 years old in 2025. It was reconstructed in 2006.

What condition is Timberline Road over Spring 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 June 2023.

How much traffic does Timberline Road over Spring Creek carry?

About 36,342 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Timberline Road over Spring Creek?

The structure is 88 ft (26.9 m) long with a longest span of 43 ft (13 m) and a deck 114 ft wide.

Who owns Timberline Road over Spring Creek?

It is owned by the City or Municipal Highway Agency.