US Bridges

Goshawk Detention over Goshawk Dam Spillway

Fair

Conejos County, Colorado · 6.3 MI NE of Antonito CO · Structure no. 000000000L59289

Built
1999
26 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
25
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

Goshawk Detention over Goshawk Dam Spillway is a steel stringer/multi-beam or girder carrying Goshawk Detention over Goshawk Dam Spillway in Conejos County, Colorado. It was built in 1999, so it is 26 years old, younger 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 vehicles a day, projected to reach 75 by 2042. The structure is 25 ft (7.6 m) long and 14 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesGoshawk Detention
CrossesGoshawk Dam Spillway
Location6.3 MI NE of Antonito CO
RouteFederal Lands Road 0
Coordinates37.13741, -106.0966
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic75 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Goshawk Detention over Goshawk Dam Spillway built?

It was built in 1999, making it 26 years old in 2025.

What condition is Goshawk Detention over Goshawk Dam Spillway 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 July 2023.

How much traffic does Goshawk Detention over Goshawk Dam Spillway carry?

About 25 vehicles per day (2023 count).

How long is Goshawk Detention over Goshawk Dam Spillway?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 14 ft wide.

Who owns Goshawk Detention over Goshawk Dam Spillway?

It is owned by the Bureau of Land Management.