US Bridges

Mountain View RD over Rancheria Creek

Poor

Mendocino County, California · 4.0 MI E/O RTE 128 · Structure no. 10C0095

Built
1935
90 years old
Condition
Poor
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
129 ft
3 main spans
Daily traffic
195
2011 count
Owner
County
County Highway Agency

About this bridge

Mountain View RD over Rancheria Creek is a concrete continuous tee beam carrying Mountain View RD over Rancheria Creek in Mendocino County, California. It was built in 1935, so it is 90 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 195 vehicles a day, roughly 7% of them trucks, projected to reach 164 by 2042. The structure is 129 ft (39.3 m) long and 18 ft wide. If it were closed, the detour would be 65.2 mi (105 km).

CarriesMountain View RD
CrossesRancheria Creek
Location4.0 MI E/O RTE 128
RouteCounty Highway 0
Coordinates38.99383, -123.43495
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating25.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length129 ft (39.3 m)
Longest span64 ft (19.5 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic195 (2011)
Projected traffic164 by 2042
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed65.2 mi (105 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$359,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mountain View RD over Rancheria Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Mountain View RD over Rancheria Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Mountain View RD over Rancheria Creek carry?

About 195 vehicles per day (2011 count), of which roughly 7% are trucks.

How long is Mountain View RD over Rancheria Creek?

The structure is 129 ft (39.3 m) long with a longest span of 64 ft (19.5 m) and a deck 18 ft wide.

Who owns Mountain View RD over Rancheria Creek?

It is owned by the County Highway Agency.