US Bridges

Manzanita RD over Doty Ravine

Fair

Placer County, California · 0.9 MI N of Wise RD · Structure no. 19C0126

Built
1940
85 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
59 ft
2 main spans
Daily traffic
112
2010 count
Owner
County
County Highway Agency

About this bridge

Manzanita RD over Doty Ravine is a concrete continuous tee beam carrying Manzanita RD over Doty Ravine in Placer County, California. It was built in 1940, so it is 85 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 112 vehicles a day, roughly 2% of them trucks, projected to reach 217 by 2045. The structure is 59 ft (18 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesManzanita RD
CrossesDoty Ravine
Location0.9 MI N of Wise RD
RouteCounty Highway 0
CountyPlacer County
StateCalifornia
Coordinates38.93818, -121.31626
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating28.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length59 ft (18 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112 (2010)
Projected traffic217 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Manzanita RD over Doty Ravine built?

It was built in 1940, making it 85 years old in 2025.

What condition is Manzanita RD over Doty Ravine 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 April 2023.

How much traffic does Manzanita RD over Doty Ravine carry?

About 112 vehicles per day (2010 count), of which roughly 2% are trucks.

How long is Manzanita RD over Doty Ravine?

The structure is 59 ft (18 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns Manzanita RD over Doty Ravine?

It is owned by the County Highway Agency.