US Bridges

Matney Way over Lost River

FairPosted for load

Klamath County, Oregon · 009 MI E of HWY 39 · Structure no. 35C211090400090

Built
1974
51 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
124 ft
4 main spans
Daily traffic
123
2020 count
Owner
County
County Highway Agency

About this bridge

Matney Way over Lost River is a wood or timber stringer/multi-beam or girder carrying Matney Way over Lost River in Klamath County, Oregon. It was built in 1974, so it is 51 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 123 vehicles a day, roughly 10% of them trucks, projected to reach 138 by 2025. The structure is 124 ft (37.8 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMatney Way
CrossesLost River
Location009 MI E of HWY 39
RouteCounty Highway C0904
StateOregon
Coordinates42.08295, -121.66169
Functional classRural 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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be 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 rating18.2 US tons
Inventory rating13.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic123 (2020)
Projected traffic138 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 Matney Way over Lost River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Matney Way over Lost River 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 March 2024.

How much traffic does Matney Way over Lost River carry?

About 123 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Matney Way over Lost River?

The structure is 124 ft (37.8 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns Matney Way over Lost River?

It is owned by the County Highway Agency.