US Bridges

SH 64 over Long Hollow Creek

Good

Lewis County, Idaho · In Nezperce · Structure no. 000000000014941

Built
1999
26 years old
Condition
Good
inspected August 2021
Type
Tee Beam
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
540
2023 count
Owner
State
State Highway Agency

About this bridge

SH 64 over Long Hollow Creek is a prestressed concrete tee beam carrying SH 64 over Long Hollow Creek in Lewis County, Idaho. It was built in 1999, so it is 26 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 540 vehicles a day, roughly 4% of them trucks, projected to reach 810 by 2042. The structure is 43 ft (13.1 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 64
CrossesLong Hollow Creek
LocationIn Nezperce
RouteState Highway 64
StateIdaho
Coordinates46.23503, -116.23761
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating94 US tons
Inventory rating55 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width37 ft (11.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2023)
Projected traffic810 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 64 over Long Hollow Creek built?

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

What condition is SH 64 over Long Hollow 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 August 2021.

How much traffic does SH 64 over Long Hollow Creek carry?

About 540 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SH 64 over Long Hollow Creek?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 37 ft wide.

Who owns SH 64 over Long Hollow Creek?

It is owned by the State Highway Agency.