US Bridges

NW Independence Hw over Frazier Creek

Fair

Benton County, Oregon · 0061 MI N of Highway 20 · Structure no. 14575A000

Built
1976
49 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
2,840
2020 count
Owner
County
County Highway Agency

About this bridge

NW Independence Hw over Frazier Creek is a prestressed concrete slab carrying NW Independence Hw over Frazier Creek in Benton County, Oregon. It was built in 1976, so it is 49 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 2,840 vehicles a day, roughly 15% of them trucks, projected to reach 4,043 by 2040. The structure is 41 ft (12.5 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNW Independence Hw
CrossesFrazier Creek
Location0061 MI N of Highway 20
RouteCounty Highway 0
CountyBenton County
StateOregon
Coordinates44.64478, -123.18293
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,840 (2020)
Projected traffic4,043 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 NW Independence Hw over Frazier Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is NW Independence Hw over Frazier Creek 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 NW Independence Hw over Frazier Creek carry?

About 2,840 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is NW Independence Hw over Frazier Creek?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 36 ft wide.

Who owns NW Independence Hw over Frazier Creek?

It is owned by the County Highway Agency.