US Bridges

STC3710;SUMMER Cmp over Squaw Creek

Good

Owyhee County, Idaho · 6.75 SW Marsing · Structure no. 000000000019670

Built
1988
37 years old
Condition
Good
inspected February 2021
Type
Frame
Concrete
Length
20 ft
1 main span
Daily traffic
100
2023 count
Owner
Local
Other Local Agency

About this bridge

STC3710;SUMMER Cmp over Squaw Creek is a concrete frame carrying STC3710;SUMMER Cmp over Squaw Creek in Owyhee County, Idaho. It was built in 1988, so it is 37 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 25% of them trucks, projected to reach 150 by 2042. The structure is 20 ft (6.1 m) long and 40 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSTC3710;SUMMER Cmp
CrossesSquaw Creek
Location6.75 SW Marsing
RouteCounty Highway 3710
CountyOwyhee County
StateIdaho
Coordinates43.4472, -116.82851
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating75 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was STC3710;SUMMER Cmp over Squaw Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is STC3710;SUMMER Cmp over Squaw Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2021.

How much traffic does STC3710;SUMMER Cmp over Squaw Creek carry?

About 100 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is STC3710;SUMMER Cmp over Squaw Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns STC3710;SUMMER Cmp over Squaw Creek?

It is owned by the Other Local Agency.