US Bridges

High Pass Road over Swartz Creek

Fair

Lane County, Oregon · 170 MI W Junction City · Structure no. 39C328345501690

Built
1976
49 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
48 ft
2 main spans
Daily traffic
167
2020 count
Owner
County
County Highway Agency

About this bridge

High Pass Road over Swartz Creek is a prestressed concrete slab carrying High Pass Road over Swartz Creek in Lane 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 5 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 167 vehicles a day, roughly 2% of them trucks, projected to reach 192 by 2025. The structure is 48 ft (14.6 m) long and 24 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

CarriesHigh Pass Road
CrossesSwartz Creek
Location170 MI W Junction City
RouteCounty Highway C3455
StateOregon
Coordinates44.21555, -123.4938
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating93 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic167 (2020)
Projected traffic192 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 Swartz Creek built?

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

What condition is High Pass Road over Swartz 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 September 2023.

How much traffic does High Pass Road over Swartz Creek carry?

About 167 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is High Pass Road over Swartz Creek?

The structure is 48 ft (14.6 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns High Pass Road over Swartz Creek?

It is owned by the County Highway Agency.