US Bridges

Beacon East RD over Slough

Fair

Lane County, Oregon · 020 MI N Santa Clara · Structure no. 39C315315000101

Built
1983
42 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
132 ft
3 main spans
Daily traffic
675
2020 count
Owner
County
County Highway Agency

About this bridge

Beacon East RD over Slough is a concrete continuous slab carrying Beacon East RD over Slough in Lane County, Oregon. It was built in 1983, so it is 42 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 675 vehicles a day, roughly 10% of them trucks, projected to reach 735 by 2025. The structure is 132 ft (40.2 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBeacon East RD
CrossesSlough
Location020 MI N Santa Clara
RouteCounty Highway C3150
CountyLane County
StateOregon
Coordinates44.13129, -123.12614
Functional classUrban Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.1 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length132 ft (40.2 m)
Longest span50 ft (15.2 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic675 (2020)
Projected traffic735 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Beacon East RD over Slough built?

It was built in 1983, making it 42 years old in 2025.

What condition is Beacon East RD over Slough 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 Beacon East RD over Slough carry?

About 675 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Beacon East RD over Slough?

The structure is 132 ft (40.2 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.

Who owns Beacon East RD over Slough?

It is owned by the County Highway Agency.