US Bridges

Lorane HWY over Spencer Creek Tributary

Good

Lane County, Oregon · 041 MI West of Eugene · Structure no. 39C644425000719

Built
1988
37 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
2,658
2020 count
Owner
County
County Highway Agency

About this bridge

Lorane HWY over Spencer Creek Tributary is a prestressed concrete slab carrying Lorane HWY over Spencer Creek Tributary in Lane County, Oregon. It was built in 1988, so it is 37 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,658 vehicles a day, roughly 10% of them trucks, projected to reach 3,113 by 2025. The structure is 38 ft (11.6 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLorane HWY
CrossesSpencer Creek Tributary
Location041 MI West of Eugene
RouteCounty Highway A0449
StateOregon
Coordinates43.97888, -123.19022
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
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 rating73 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span37 ft (11.3 m)
Deck width36 ft (11 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,658 (2020)
Projected traffic3,113 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Lorane HWY over Spencer Creek Tributary built?

It was built in 1988, making it 37 years old in 2025.

What condition is Lorane HWY over Spencer Creek Tributary in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Lorane HWY over Spencer Creek Tributary carry?

About 2,658 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Lorane HWY over Spencer Creek Tributary?

The structure is 38 ft (11.6 m) long with a longest span of 37 ft (11.3 m) and a deck 36 ft wide.

Who owns Lorane HWY over Spencer Creek Tributary?

It is owned by the County Highway Agency.