US Bridges

Hayden Road over Alsea River

PoorPosted for load

Benton County, Oregon · 0014 MI S of HWY 34 · Structure no. 14538 000

Built
1945
80 years old
Condition
Poor
inspected July 2024
Type
Truss - Thru
Wood or Timber
Length
151 ft
1 main span
Daily traffic
102
2021 count
Owner
County
County Highway Agency

About this bridge

Hayden Road over Alsea River is a wood or timber truss - thru carrying Hayden Road over Alsea River in Benton County, Oregon. It was built in 1945, so it is 80 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 102 vehicles a day, projected to reach 139 by 2041. The structure is 151 ft (46 m) long and 17 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesHayden Road
CrossesAlsea River
Location0014 MI S of HWY 34
RouteCounty Highway 0
CountyBenton County
StateOregon
Coordinates44.38317, -123.63068
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.9 US tons
Inventory rating10 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1 (+3 approach)
Design loadUnknown
Structure length151 ft (46 m)
Longest span91 ft (27.7 m)
Deck width17 ft (5.3 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deck12 ft (3.6 m)

Traffic and service

Average daily traffic102 (2021)
Projected traffic139 by 2041
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$774,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hayden Road over Alsea River built?

It was built in 1945, making it 80 years old in 2025.

What condition is Hayden Road over Alsea River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Hayden Road over Alsea River carry?

About 102 vehicles per day (2021 count).

How long is Hayden Road over Alsea River?

The structure is 151 ft (46 m) long with a longest span of 91 ft (27.7 m) and a deck 17 ft wide.

Who owns Hayden Road over Alsea River?

It is owned by the County Highway Agency.