US Bridges

Lewis & Clark RD over Stanley Creek

Good

Clatsop County, Oregon · 001 MI E HWY 101 JCT · Structure no. 20633 080900017

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
807
2020 count
Owner
County
County Highway Agency

About this bridge

Lewis & Clark RD over Stanley Creek is a prestressed concrete slab carrying Lewis & Clark RD over Stanley Creek in Clatsop County, Oregon. It was built in 2005, so it is 20 years old, younger than the Oregon average of 49.9 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 807 vehicles a day, roughly 10% of them trucks, projected to reach 977 by 2025. The structure is 45 ft (13.7 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLewis & Clark RD
CrossesStanley Creek
Location001 MI E HWY 101 JCT
RouteCounty Highway A7310
StateOregon
Coordinates46.0104, -123.90787
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length45 ft (13.7 m)
Longest span45 ft (13.7 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic807 (2020)
Projected traffic977 by 2025
Trucks10%
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

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 Lewis & Clark RD over Stanley Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Lewis & Clark RD over Stanley 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 April 2023.

How much traffic does Lewis & Clark RD over Stanley Creek carry?

About 807 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Lewis & Clark RD over Stanley Creek?

The structure is 45 ft (13.7 m) long with a longest span of 45 ft (13.7 m) and a deck 32 ft wide.

Who owns Lewis & Clark RD over Stanley Creek?

It is owned by the County Highway Agency.