US Bridges

Spink Lane over Boulder Creek

Fair

Valley County, Idaho · 4.0 N. 1.7 E. Donnelly · Structure no. 000000000028628

Built
2004
21 years old
Condition
Fair
inspected August 2024
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
230
2023 count
Owner
County
County Highway Agency

About this bridge

Spink Lane over Boulder Creek is a concrete frame carrying Spink Lane over Boulder Creek in Valley County, Idaho. It was built in 2004, so it is 21 years old, younger than the Idaho average of 45.3 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 230 vehicles a day, roughly 35% of them trucks, projected to reach 345 by 2039. The structure is 25 ft (7.6 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSpink Lane
CrossesBoulder Creek
Location4.0 N. 1.7 E. Donnelly
RouteCounty Highway 0
CountyValley County
StateIdaho
Coordinates44.78897, -116.04172
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating57 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.2 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2023)
Projected traffic345 by 2039
Trucks35%
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

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 Spink Lane over Boulder Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Spink Lane over Boulder Creek 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 Spink Lane over Boulder Creek carry?

About 230 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is Spink Lane over Boulder Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns Spink Lane over Boulder Creek?

It is owned by the County Highway Agency.