US Bridges

Crother RD over Bear River Canal

Fair

Placer County, California · 0.5 MI E Placer Hills RD · Structure no. 19C0148

Built
1930
95 years old, rebuilt 1945
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
37 ft
1 main span
Daily traffic
350
1978 count
Owner
County
County Highway Agency

About this bridge

Crother RD over Bear River Canal is a concrete tee beam carrying Crother RD over Bear River Canal in Placer County, California. It was built in 1930 and reconstructed in 1945, so it is 95 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 350 vehicles a day, roughly 1% of them trucks, projected to reach 1,118 by 2042. The structure is 37 ft (11.3 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCrother RD
CrossesBear River Canal
Location0.5 MI E Placer Hills RD
RouteCounty Highway 0
Coordinates39.01247, -120.99711
Functional classRural Minor 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span34 ft (10.4 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (1978)
Projected traffic1,118 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Crother RD over Bear River Canal built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1945.

What condition is Crother RD over Bear River Canal 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 2024.

How much traffic does Crother RD over Bear River Canal carry?

About 350 vehicles per day (1978 count), of which roughly 1% are trucks.

How long is Crother RD over Bear River Canal?

The structure is 37 ft (11.3 m) long with a longest span of 34 ft (10.4 m) and a deck 25 ft wide.

Who owns Crother RD over Bear River Canal?

It is owned by the County Highway Agency.