US Bridges

Bucks Lake Road over Rock Creek

Fair

Plumas County, California · 4.3 MI W/O SR 70 · Structure no. 09C0021

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
170 ft
3 main spans
Daily traffic
1,700
2019 count
Owner
County
County Highway Agency

About this bridge

Bucks Lake Road over Rock Creek is a concrete continuous box beam or girders - multiple carrying Bucks Lake Road over Rock Creek in Plumas County, California. It was built in 1969, so it is 56 years old, older than the California average of 54.8 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 1,700 vehicles a day, roughly 5% of them trucks, projected to reach 4,163 by 2044. The structure is 170 ft (51.8 m) long and 33 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBucks Lake Road
CrossesRock Creek
Location4.3 MI W/O SR 70
RouteCounty Highway 0
CountyPlumas County
StateCalifornia
Coordinates39.94668, -121.01974
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span64 ft (19.5 m)
Deck width33 ft (10 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2019)
Projected traffic4,163 by 2044
Trucks5%
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 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 Bucks Lake Road over Rock Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Bucks Lake Road over Rock Creek 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 October 2023.

How much traffic does Bucks Lake Road over Rock Creek carry?

About 1,700 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Bucks Lake Road over Rock Creek?

The structure is 170 ft (51.8 m) long with a longest span of 64 ft (19.5 m) and a deck 33 ft wide.

Who owns Bucks Lake Road over Rock Creek?

It is owned by the County Highway Agency.