US Bridges

11th St. over River Frontage

Good

Clatsop County, Oregon · Astorias Water Front · Structure no. 23064 000 00000

Built
2019
6 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
33 ft
4 main spans
Daily traffic
5
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

11th St. over River Frontage is a prestressed concrete slab carrying 11th St. over River Frontage in Clatsop County, Oregon. It was built in 2019, so it is 6 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 5 vehicles a day, roughly 10% of them trucks, projected to reach 8 by 2039. The structure is 33 ft (10 m) long and 63 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries11th St.
CrossesRiver Frontage
LocationAstorias Water Front
RouteCity Street C0000
StateOregon
Coordinates46.19038, -123.83171
Functional classUrban Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHL 93
Structure length33 ft (10 m)
Longest span28 ft (8.4 m)
Deck width63 ft (19.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2019)
Projected traffic8 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 11th St. over River Frontage built?

It was built in 2019, making it 6 years old in 2025.

What condition is 11th St. over River Frontage 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 11th St. over River Frontage carry?

About 5 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is 11th St. over River Frontage?

The structure is 33 ft (10 m) long with a longest span of 28 ft (8.4 m) and a deck 63 ft wide.

Who owns 11th St. over River Frontage?

It is owned by the City or Municipal Highway Agency.