US Bridges

Stc 3770;STAR RD over Fivemile Creek Feeder

Good

Ada County, Idaho · 3.2 S of Star · Structure no. 000000000019744

Built
2024
1 years old
Condition
Good
inspected June 2024
Type
Frame
Concrete
Length
28 ft
1 main span
Daily traffic
10,500
2022 count
Owner
County
County Highway Agency

About this bridge

Stc 3770;STAR RD over Fivemile Creek Feeder is a concrete frame carrying Stc 3770;STAR RD over Fivemile Creek Feeder in Ada County, Idaho. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,500 vehicles a day, roughly 2% of them trucks, projected to reach 15,750 by 2042. The structure is 28 ft (8.4 m) long and 114 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesStc 3770;STAR RD
CrossesFivemile Creek Feeder
Location3.2 S of Star
RouteCounty Highway 3770
CountyAda County
StateIdaho
Coordinates43.64479, -116.49342
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length28 ft (8.4 m)
Longest span24 ft (7.2 m)
Deck width114 ft (34.7 m)
Roadway width112 ft (34 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,500 (2022)
Projected traffic15,750 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway 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 Stc 3770;STAR RD over Fivemile Creek Feeder built?

It was built in 2024, making it 1 years old in 2025.

What condition is Stc 3770;STAR RD over Fivemile Creek Feeder 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 June 2024.

How much traffic does Stc 3770;STAR RD over Fivemile Creek Feeder carry?

About 10,500 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Stc 3770;STAR RD over Fivemile Creek Feeder?

The structure is 28 ft (8.4 m) long with a longest span of 24 ft (7.2 m) and a deck 114 ft wide.

Who owns Stc 3770;STAR RD over Fivemile Creek Feeder?

It is owned by the County Highway Agency.