US Bridges

County Road 103 over Larimer Poudre Canal

FairPosted for load

Larimer County, Colorado · 6.8 MI N of ST HWY 14 · Structure no. LR103-6.8-S14

Built
1954
71 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
32 ft
1 main span
Daily traffic
85
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 103 over Larimer Poudre Canal is a wood or timber stringer/multi-beam or girder carrying County Road 103 over Larimer Poudre Canal in Larimer County, Colorado. It was built in 1954, so it is 71 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. Its operating status is: posted for load restriction.

It carries about 85 vehicles a day, roughly 10% of them trucks, projected to reach 106 by 2042. The structure is 32 ft (9.7 m) long and 27 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

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CarriesCounty Road 103
CrossesLarimer Poudre Canal
Location6.8 MI N of ST HWY 14
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.67739, -105.85464
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.1 US tons
Inventory rating22.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length32 ft (9.7 m)
Longest span28 ft (8.6 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic85 (2023)
Projected traffic106 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 103 over Larimer Poudre Canal built?

It was built in 1954, making it 71 years old in 2025.

What condition is County Road 103 over Larimer Poudre 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 May 2023.

How much traffic does County Road 103 over Larimer Poudre Canal carry?

About 85 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County Road 103 over Larimer Poudre Canal?

The structure is 32 ft (9.7 m) long with a longest span of 28 ft (8.6 m) and a deck 27 ft wide.

Who owns County Road 103 over Larimer Poudre Canal?

It is owned by the County Highway Agency.