US Bridges

Crystal Springs RD over Lost River

Fair

Klamath County, Oregon · 0.02 E of Reeder Road · Structure no. 20363 B30400002

Built
2006
19 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
225 ft
3 main spans
Daily traffic
600
2020 count
Owner
County
County Highway Agency

About this bridge

Crystal Springs RD over Lost River is a prestressed concrete slab carrying Crystal Springs RD over Lost River in Klamath County, Oregon. It was built in 2006, so it is 19 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 600 vehicles a day, roughly 10% of them trucks, projected to reach 685 by 2025. The structure is 225 ft (68.6 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCrystal Springs RD
CrossesLost River
Location0.02 E of Reeder Road
RouteCounty Highway 0B304
StateOregon
Coordinates42.1552, -121.66215
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.8 US tons
Inventory rating70.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length225 ft (68.6 m)
Longest span75 ft (22.9 m)
Deck width52 ft (16 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2020)
Projected traffic685 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Crystal Springs RD over Lost River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Crystal Springs RD 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 July 2023.

How much traffic does Crystal Springs RD over Lost River carry?

About 600 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Crystal Springs RD over Lost River?

The structure is 225 ft (68.6 m) long with a longest span of 75 ft (22.9 m) and a deck 52 ft wide.

Who owns Crystal Springs RD over Lost River?

It is owned by the County Highway Agency.