US Bridges

Plum Street over Larimer Co. Canal No. 2

Fair

Larimer County, Colorado · 0.1 MI W of City Park Dr. · Structure no. FCPLM-W0.1-CTYP

Built
1950
75 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
21 ft
1 main span
Daily traffic
2,970
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Plum Street over Larimer Co. Canal No. 2 is a concrete culvert carrying Plum Street over Larimer Co. Canal No. 2 in Larimer County, Colorado. It was built in 1950, so it is 75 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 2,970 vehicles a day, roughly 6% of them trucks, projected to reach 3,712 by 2043. The structure is 21 ft (6.5 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPlum Street
CrossesLarimer Co. Canal No. 2
Location0.1 MI W of City Park Dr.
RouteCity Street 0
CountyLarimer County
StateColorado
Coordinates40.57667, -105.10197
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 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 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 typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length21 ft (6.5 m)
Longest span21 ft (6.5 m)
Deck width38 ft (11.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,970 (2023)
Projected traffic3,712 by 2043
Trucks6%
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$120,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Plum Street over Larimer Co. Canal No. 2 built?

It was built in 1950, making it 75 years old in 2025.

What condition is Plum Street over Larimer Co. Canal No. 2 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 Plum Street over Larimer Co. Canal No. 2 carry?

About 2,970 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Plum Street over Larimer Co. Canal No. 2?

The structure is 21 ft (6.5 m) long with a longest span of 21 ft (6.5 m) and a deck 38 ft wide.

Who owns Plum Street over Larimer Co. Canal No. 2?

It is owned by the City or Municipal Highway Agency.