US Bridges

Falvey Road over Lost River

Good

Klamath County, Oregon · 007 MI E of Merrill Pit R · Structure no. 35C131099000070

Built
1989
36 years old
Condition
Good
inspected March 2023
Type
Slab
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
209
2020 count
Owner
County
County Highway Agency

About this bridge

Falvey Road over Lost River is a prestressed concrete slab carrying Falvey Road over Lost River in Klamath County, Oregon. It was built in 1989, so it is 36 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 209 vehicles a day, roughly 10% of them trucks, projected to reach 219 by 2025. The structure is 69 ft (21 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFalvey Road
CrossesLost River
Location007 MI E of Merrill Pit R
RouteCounty Highway C0990
StateOregon
Coordinates42.02403, -121.61689
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.1 US tons
Inventory rating46 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length69 ft (21 m)
Longest span68 ft (20.7 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic209 (2020)
Projected traffic219 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 Falvey Road over Lost River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Falvey Road over Lost 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 March 2023.

How much traffic does Falvey Road over Lost River carry?

About 209 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Falvey Road over Lost River?

The structure is 69 ft (21 m) long with a longest span of 68 ft (20.7 m) and a deck 32 ft wide.

Who owns Falvey Road over Lost River?

It is owned by the County Highway Agency.