US Bridges

Mulberry St/Cr 46 over Pleas. Valley Lake Canal

Fair

Larimer County, Colorado · 0.1 M E of Overland Trail · Structure no. FCMULB-0.1-OVLD

Built
1930
95 years old, rebuilt 1950
Condition
Fair
inspected April 2023
Type
Frame
Concrete
Length
27 ft
1 main span
Daily traffic
4,030
2023 count
Owner
County
County Highway Agency

About this bridge

Mulberry St/Cr 46 over Pleas. Valley Lake Canal is a concrete frame carrying Mulberry St/Cr 46 over Pleas. Valley Lake Canal in Larimer County, Colorado. It was built in 1930 and reconstructed in 1950, so it is 95 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 4,030 vehicles a day, roughly 9% of them trucks, projected to reach 5,038 by 2043. The structure is 27 ft (8.2 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMulberry St/Cr 46
CrossesPleas. Valley Lake Canal
Location0.1 M E of Overland Trail
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.58225, -105.13158
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 geometry3: Basically intolerable, requiring high priority of corrective action
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 typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,030 (2023)
Projected traffic5,038 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$151,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mulberry St/Cr 46 over Pleas. Valley Lake Canal built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1950.

What condition is Mulberry St/Cr 46 over Pleas. Valley Lake 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 Mulberry St/Cr 46 over Pleas. Valley Lake Canal carry?

About 4,030 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Mulberry St/Cr 46 over Pleas. Valley Lake Canal?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 28 ft wide.

Who owns Mulberry St/Cr 46 over Pleas. Valley Lake Canal?

It is owned by the County Highway Agency.