US Bridges

Stow Pit RD over Long Tom River

Fair

Benton County, Oregon · 0010 MI E of HWY 99-W · Structure no. 18832 000 00010

Built
2000
25 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
164 ft
2 main spans
Daily traffic
269
2020 count
Owner
County
County Highway Agency

About this bridge

Stow Pit RD over Long Tom River is a prestressed concrete continuous tee beam carrying Stow Pit RD over Long Tom River in Benton County, Oregon. It was built in 2000, so it is 25 years old, younger than the Oregon average of 49.9 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 269 vehicles a day, roughly 10% of them trucks, projected to reach 382 by 2040. The structure is 164 ft (50 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesStow Pit RD
CrossesLong Tom River
Location0010 MI E of HWY 99-W
RouteCounty Highway 0
StateOregon
Coordinates44.34254, -123.29535
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.3 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckOther
Main spans2
Design loadHS 25 or greater
Structure length164 ft (50 m)
Longest span79 ft (24.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic269 (2020)
Projected traffic382 by 2040
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stow Pit RD over Long Tom River built?

It was built in 2000, making it 25 years old in 2025.

What condition is Stow Pit RD over Long Tom River 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 2024.

How much traffic does Stow Pit RD over Long Tom River carry?

About 269 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Stow Pit RD over Long Tom River?

The structure is 164 ft (50 m) long with a longest span of 79 ft (24.2 m) and a deck 35 ft wide.

Who owns Stow Pit RD over Long Tom River?

It is owned by the County Highway Agency.