US Bridges

E Side Potter Vly over East Fork Russian River

Fair

Mendocino County, California · 0.3 MI N RTE 20 · Structure no. 10C0102

Built
1999
26 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
465 ft
3 main spans
Daily traffic
3,699
2011 count
Owner
County
County Highway Agency

About this bridge

E Side Potter Vly over East Fork Russian River is a prestressed concrete continuous box beam or girders - multiple carrying E Side Potter Vly over East Fork Russian River in Mendocino County, California. It was built in 1999, so it is 26 years old, younger 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 3,699 vehicles a day, roughly 5% of them trucks, projected to reach 2,180 by 2041. The structure is 465 ft (141.6 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesE Side Potter Vly
CrossesEast Fork Russian River
Location0.3 MI N RTE 20
RouteCounty Highway 0
CountyMendocino County
StateCalifornia
Coordinates39.24853, -123.12113
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length465 ft (141.6 m)
Longest span175 ft (53.3 m)
Deck width43 ft (13 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,699 (2011)
Projected traffic2,180 by 2041
Trucks5%
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

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 E Side Potter Vly over East Fork Russian River built?

It was built in 1999, making it 26 years old in 2025.

What condition is E Side Potter Vly over East Fork Russian River 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 August 2023.

How much traffic does E Side Potter Vly over East Fork Russian River carry?

About 3,699 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is E Side Potter Vly over East Fork Russian River?

The structure is 465 ft (141.6 m) long with a longest span of 175 ft (53.3 m) and a deck 43 ft wide.

Who owns E Side Potter Vly over East Fork Russian River?

It is owned by the County Highway Agency.