US Bridges

Sma 7134;8th St. over Bryden Canyon Road

Fair

Nez Perce County, Idaho · In Lewiston · Structure no. 000000000021490

Built
1999
26 years old
Condition
Fair
inspected July 2022
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
133 ft
1 main span
Daily traffic
4,100
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sma 7134;8th St. over Bryden Canyon Road is a prestressed concrete box beam or girders - single or spread carrying Sma 7134;8th St. over Bryden Canyon Road in Nez Perce 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 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 4,100 vehicles a day, projected to reach 6,150 by 2042. The structure is 133 ft (40.5 m) long and 73 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSma 7134;8th St.
CrossesBryden Canyon Road
LocationIn Lewiston
RouteCity Street 7134
CountyNez Perce County
StateIdaho
Coordinates46.39211, -117.02489
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating63.1 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length133 ft (40.5 m)
Longest span129 ft (39.3 m)
Deck width73 ft (22.3 m)
Roadway width58 ft (17.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2023)
Projected traffic6,150 by 2042
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sma 7134;8th St. over Bryden Canyon Road built?

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

What condition is Sma 7134;8th St. over Bryden Canyon Road 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 July 2022.

How much traffic does Sma 7134;8th St. over Bryden Canyon Road carry?

About 4,100 vehicles per day (2023 count).

How long is Sma 7134;8th St. over Bryden Canyon Road?

The structure is 133 ft (40.5 m) long with a longest span of 129 ft (39.3 m) and a deck 73 ft wide.

Who owns Sma 7134;8th St. over Bryden Canyon Road?

It is owned by the City or Municipal Highway Agency.