US Bridges

Ostrander RD over Ostrander Creek

Good

Cowlitz County, Washington · 0.67 E Pac Ave N (mp 3.63 · Structure no. 089494000000000

Built
2023
2 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
97 ft
1 main span
Daily traffic
1,600
2021 count
Owner
County
County Highway Agency

About this bridge

Ostrander RD over Ostrander Creek is a prestressed concrete stringer/multi-beam or girder carrying Ostrander RD over Ostrander Creek in Cowlitz County, Washington. It was built in 2023, so it is 2 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,600 vehicles a day, roughly 18% of them trucks. The structure is 97 ft (29.5 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesOstrander RD
CrossesOstrander Creek
Location0.67 E Pac Ave N (mp 3.63
RouteCounty Highway 53700
Coordinates46.19725, -122.88062
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating53.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length97 ft (29.5 m)
Longest span97 ft (29.5 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2021)
Projected traffic—
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ostrander RD over Ostrander Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is Ostrander RD over Ostrander 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 February 2024.

How much traffic does Ostrander RD over Ostrander Creek carry?

About 1,600 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is Ostrander RD over Ostrander Creek?

The structure is 97 ft (29.5 m) long with a longest span of 97 ft (29.5 m) and a deck 39 ft wide.

Who owns Ostrander RD over Ostrander Creek?

It is owned by the County Highway Agency.