US Bridges

Fdr 622 over Piedra River

Fair

Archuleta County, Colorado · 18.5 MI Wnw of Pagosa Spg · Structure no. 021306000001022

Built
1957
68 years old, rebuilt 2000
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
3 main spans
Daily traffic
42
2002 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 622 over Piedra River is a steel stringer/multi-beam or girder carrying Fdr 622 over Piedra River in Archuleta County, Colorado. It was built in 1957 and reconstructed in 2000, so it is 68 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 42 vehicles a day, projected to reach 10 by 2012. The structure is 153 ft (46.6 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

Location

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CarriesFdr 622
CrossesPiedra River
Location18.5 MI Wnw of Pagosa Spg
RouteFederal Lands Road 622
CountyArchuleta County
StateColorado
Coordinates37.3535, -107.324
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating23.3 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length153 ft (46.6 m)
Longest span54 ft (16.5 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42 (2002)
Projected traffic10 by 2012
Trucks—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$465,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 622 over Piedra River built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2000.

What condition is Fdr 622 over Piedra 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 August 2024.

How much traffic does Fdr 622 over Piedra River carry?

About 42 vehicles per day (2002 count).

How long is Fdr 622 over Piedra River?

The structure is 153 ft (46.6 m) long with a longest span of 54 ft (16.5 m) and a deck 16 ft wide.

Who owns Fdr 622 over Piedra River?

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