US Bridges

State Route 162 over Corral Creek

Fair

Mendocino County, California · 01-MEN-162-2.21 · Structure no. 10 0234

Built
1959
66 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
860
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 162 over Corral Creek is a concrete culvert carrying State Route 162 over Corral Creek in Mendocino County, California. It was built in 1959, so it is 66 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 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 860 vehicles a day, roughly 13% of them trucks, projected to reach 1,274 by 2045. The structure is 20 ft (6.1 m) long and 29 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

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CarriesState Route 162
CrossesCorral Creek
Location01-MEN-162-2.21
RouteState Highway 162
CountyMendocino County
StateCalifornia
Coordinates39.5664, -123.39866
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic860 (2009)
Projected traffic1,274 by 2045
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 162 over Corral Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is State Route 162 over Corral 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 May 2023.

How much traffic does State Route 162 over Corral Creek carry?

About 860 vehicles per day (2009 count), of which roughly 13% are trucks.

How long is State Route 162 over Corral Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns State Route 162 over Corral Creek?

It is owned by the State Highway Agency.