US Bridges

London RD over Coast Fork Willamette R.

Fair

Lane County, Oregon · 049M S Cottage Grove Res · Structure no. 14868A270000876

Built
1960
65 years old, rebuilt 2008
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
172 ft
3 main spans
Daily traffic
1,258
2020 count
Owner
County
County Highway Agency

About this bridge

London RD over Coast Fork Willamette R. is a concrete continuous tee beam carrying London RD over Coast Fork Willamette R. in Lane County, Oregon. It was built in 1960 and reconstructed in 2008, so it is 65 years old, older 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 1,258 vehicles a day, roughly 10% of them trucks, projected to reach 1,473 by 2025. The structure is 172 ft (52.4 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLondon RD
CrossesCoast Fork Willamette R.
Location049M S Cottage Grove Res
RouteCounty Highway A0469
StateOregon
Coordinates43.64851, -123.08291
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span66 ft (20.1 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,258 (2020)
Projected traffic1,473 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was London RD over Coast Fork Willamette R. built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2008.

What condition is London RD over Coast Fork Willamette R. 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 2024.

How much traffic does London RD over Coast Fork Willamette R. carry?

About 1,258 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is London RD over Coast Fork Willamette R.?

The structure is 172 ft (52.4 m) long with a longest span of 66 ft (20.1 m) and a deck 31 ft wide.

Who owns London RD over Coast Fork Willamette R.?

It is owned by the County Highway Agency.