US Bridges

Spencer CR RD over Spencer Creek

Fair

Lane County, Oregon · 065 MI SW Eugene · Structure no. 18684 413200192

Built
1998
27 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
73 ft
2 main spans
Daily traffic
1,592
2020 count
Owner
County
County Highway Agency

About this bridge

Spencer CR RD over Spencer Creek is a prestressed concrete slab carrying Spencer CR RD over Spencer Creek in Lane County, Oregon. It was built in 1998, so it is 27 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 1,592 vehicles a day, roughly 10% of them trucks, projected to reach 1,867 by 2025. The structure is 73 ft (22.3 m) long and 36 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSpencer CR RD
CrossesSpencer Creek
Location065 MI SW Eugene
RouteCounty Highway C4132
CountyLane County
StateOregon
Coordinates43.98663, -123.21467
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
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating57.5 US tons
Inventory rating44.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 25 or greater
Structure length73 ft (22.3 m)
Longest span36 ft (11 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,592 (2020)
Projected traffic1,867 by 2025
Trucks10%
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 Spencer CR RD over Spencer Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is Spencer CR RD over Spencer 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 Spencer CR RD over Spencer Creek carry?

About 1,592 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Spencer CR RD over Spencer Creek?

The structure is 73 ft (22.3 m) long with a longest span of 36 ft (11 m) and a deck 36 ft wide.

Who owns Spencer CR RD over Spencer Creek?

It is owned by the County Highway Agency.