US Bridges

Fdr 155 over Cache LA Poudre River

Fair

Larimer County, Colorado · 50 Ft South of CO HWY 114 · Structure no. 021004000001190

Built
1937
88 years old
Condition
Fair
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
93 ft
2 main spans
Daily traffic
100
1992 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 155 over Cache LA Poudre River is a steel girder and floorbeam system carrying Fdr 155 over Cache LA Poudre River in Larimer County, Colorado. It was built in 1937, so it is 88 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 100 vehicles a day, roughly 4% of them trucks, projected to reach 190 by 2012. The structure is 93 ft (28.3 m) long and 12 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFdr 155
CrossesCache LA Poudre River
Location50 Ft South of CO HWY 114
RouteFederal Lands Road 155
Coordinates40.68283, -105.46164
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans2
Design loadHS 15
Structure length93 ft (28.3 m)
Longest span44 ft (13.4 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1992)
Projected traffic190 by 2012
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$269,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 155 over Cache LA Poudre River built?

It was built in 1937, making it 88 years old in 2025.

What condition is Fdr 155 over Cache LA Poudre River 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 September 2024.

How much traffic does Fdr 155 over Cache LA Poudre River carry?

About 100 vehicles per day (1992 count), of which roughly 4% are trucks.

How long is Fdr 155 over Cache LA Poudre River?

The structure is 93 ft (28.3 m) long with a longest span of 44 ft (13.4 m) and a deck 12 ft wide.

Who owns Fdr 155 over Cache LA Poudre River?

It is owned by the U.S. Forest Service.