US Bridges

State Route 162 over Middle Fork Eel River

Good

Mendocino County, California · 01-MEN-162-15.14 · Structure no. 10 0252

Built
1985
40 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
490 ft
3 main spans
Daily traffic
860
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 162 over Middle Fork Eel River is a prestressed concrete continuous box beam or girders - multiple carrying State Route 162 over Middle Fork Eel River in Mendocino County, California. It was built in 1985, so it is 40 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 860 vehicles a day, roughly 13% of them trucks, projected to reach 1,274 by 2045. The structure is 490 ft (149.5 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesState Route 162
CrossesMiddle Fork Eel River
Location01-MEN-162-15.14
RouteState Highway 162
Coordinates39.71073, -123.34862
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
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

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length490 ft (149.5 m)
Longest span195 ft (59.4 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 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 closed123.7 mi (199 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 Middle Fork Eel River built?

It was built in 1985, making it 40 years old in 2025.

What condition is State Route 162 over Middle Fork Eel River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does State Route 162 over Middle Fork Eel River carry?

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

How long is State Route 162 over Middle Fork Eel River?

The structure is 490 ft (149.5 m) long with a longest span of 195 ft (59.4 m) and a deck 35 ft wide.

Who owns State Route 162 over Middle Fork Eel River?

It is owned by the State Highway Agency.