US Bridges

STC3725;LAKE Shore over Deer Flat High Line Cnl

Good

Canyon County, Idaho · 0.1 N 5.0 E Marsing · Structure no. 000000000027181

Built
2017
8 years old
Condition
Good
inspected March 2023
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
1,700
2023 count
Owner
Local
Other Local Agency

About this bridge

STC3725;LAKE Shore over Deer Flat High Line Cnl is a concrete frame carrying STC3725;LAKE Shore over Deer Flat High Line Cnl in Canyon County, Idaho. It was built in 2017, so it is 8 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 1,700 vehicles a day, roughly 26% of them trucks, projected to reach 2,550 by 2042. The structure is 22 ft (6.7 m) long and 66 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSTC3725;LAKE Shore
CrossesDeer Flat High Line Cnl
Location0.1 N 5.0 E Marsing
RouteCounty Highway 3725
CountyCanyon County
StateIdaho
Coordinates43.54992, -116.71294
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating72 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width66 ft (20.1 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2023)
Projected traffic2,550 by 2042
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 STC3725;LAKE Shore over Deer Flat High Line Cnl built?

It was built in 2017, making it 8 years old in 2025.

What condition is STC3725;LAKE Shore over Deer Flat High Line Cnl 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 March 2023.

How much traffic does STC3725;LAKE Shore over Deer Flat High Line Cnl carry?

About 1,700 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is STC3725;LAKE Shore over Deer Flat High Line Cnl?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 66 ft wide.

Who owns STC3725;LAKE Shore over Deer Flat High Line Cnl?

It is owned by the Other Local Agency.