US Bridges

Clear Lake RD over Long Tom River

Good

Lane County, Oregon · 0010 MI No Fernridge Dam · Structure no. 014348370000704

Built
1967
58 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
365 ft
5 main spans
Daily traffic
5,914
2020 count
Owner
County
County Highway Agency

About this bridge

Clear Lake RD over Long Tom River is a prestressed concrete stringer/multi-beam or girder carrying Clear Lake RD over Long Tom River in Lane County, Oregon. It was built in 1967, so it is 58 years old, older 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 5,914 vehicles a day, roughly 10% of them trucks, projected to reach 6,664 by 2025. The structure is 365 ft (111.3 m) long and 39 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesClear Lake RD
CrossesLong Tom River
Location0010 MI No Fernridge Dam
RouteCounty Highway A0454
StateOregon
Coordinates44.12102, -123.30125
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 protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length365 ft (111.3 m)
Longest span79 ft (24.1 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,914 (2020)
Projected traffic6,664 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed21.1 mi (34 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 Clear Lake RD over Long Tom River built?

It was built in 1967, making it 58 years old in 2025.

What condition is Clear Lake RD over Long Tom River 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 Clear Lake RD over Long Tom River carry?

About 5,914 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Clear Lake RD over Long Tom River?

The structure is 365 ft (111.3 m) long with a longest span of 79 ft (24.1 m) and a deck 39 ft wide.

Who owns Clear Lake RD over Long Tom River?

It is owned by the County Highway Agency.