US Bridges

High Pass Road over Long Tom River

Fair

Lane County, Oregon · 033 MI West Junction City · Structure no. 13911A345500326

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
147 ft
3 main spans
Daily traffic
2,746
2020 count
Owner
County
County Highway Agency

About this bridge

High Pass Road over Long Tom River is a prestressed concrete slab carrying High Pass Road over Long Tom River in Lane County, Oregon. It was built in 1978, so it is 47 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 2,746 vehicles a day, roughly 10% of them trucks, projected to reach 3,181 by 2025. The structure is 147 ft (44.8 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesHigh Pass Road
CrossesLong Tom River
Location033 MI West Junction City
RouteCounty Highway A0456
CountyLane County
StateOregon
Coordinates44.21537, -123.26862
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating12.9 US tons
Inventory rating10 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span49 ft (14.9 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,746 (2020)
Projected traffic3,181 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 High Pass Road over Long Tom River built?

It was built in 1978, making it 47 years old in 2025.

What condition is High Pass Road 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 High Pass Road over Long Tom River carry?

About 2,746 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is High Pass Road over Long Tom River?

The structure is 147 ft (44.8 m) long with a longest span of 49 ft (14.9 m) and a deck 40 ft wide.

Who owns High Pass Road over Long Tom River?

It is owned by the County Highway Agency.