US Bridges

WB Harmony Road over Fossil Crk. Res. Inlet

Fair

Larimer County, Colorado · 0.7 Mi. W of JCT I 25 · Structure no. FCHRMYW-0.7-I25

Built
1973
52 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
31 ft
1 main span
Daily traffic
25,324
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

WB Harmony Road over Fossil Crk. Res. Inlet is a concrete culvert carrying WB Harmony Road over Fossil Crk. Res. Inlet in Larimer County, Colorado. It was built in 1973, so it is 52 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 25,324 vehicles a day, roughly 2% of them trucks, projected to reach 31,655 by 2042. The structure is 31 ft (9.4 m) long and 106 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesWB Harmony Road
CrossesFossil Crk. Res. Inlet
Location0.7 Mi. W of JCT I 25
RouteCity Street 0
CountyLarimer County
StateColorado
Coordinates40.52353, -105.00572
Functional classUrban Other Principal 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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.8 US tons
Inventory rating59.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width106 ft (32.3 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,324 (2023)
Projected traffic31,655 by 2042
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 WB Harmony Road over Fossil Crk. Res. Inlet built?

It was built in 1973, making it 52 years old in 2025.

What condition is WB Harmony Road over Fossil Crk. Res. Inlet 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 WB Harmony Road over Fossil Crk. Res. Inlet carry?

About 25,324 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is WB Harmony Road over Fossil Crk. Res. Inlet?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 106 ft wide.

Who owns WB Harmony Road over Fossil Crk. Res. Inlet?

It is owned by the City or Municipal Highway Agency.