US Bridges

State Route 86 NB over Memel Ditch

Poor

Riverside County, California · 08-RIV-086-1.58 · Structure no. 56 0149R

Built
1979
46 years old
Condition
Poor
inspected March 2023
Type
Slab
Concrete Continuous
Length
53 ft
2 main spans
Daily traffic
15,300
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 86 NB over Memel Ditch is a concrete continuous slab carrying State Route 86 NB over Memel Ditch in Riverside County, California. It was built in 1979, so it is 46 years old, younger 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 15,300 vehicles a day, roughly 27% of them trucks, projected to reach 17,794 by 2045. The structure is 53 ft (16.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesState Route 86 NB
CrossesMemel Ditch
Location08-RIV-086-1.58
RouteState Highway 86
CountyRiverside County
StateCalifornia
Coordinates33.44358, -116.07743
Functional classRural Principal Arterial - Other

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.6 US tons
Inventory rating60 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span25 ft (7.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,300 (2020)
Projected traffic17,794 by 2045
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$354,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 86 NB over Memel Ditch built?

It was built in 1979, making it 46 years old in 2025.

What condition is State Route 86 NB over Memel Ditch 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 March 2023.

How much traffic does State Route 86 NB over Memel Ditch carry?

About 15,300 vehicles per day (2020 count), of which roughly 27% are trucks.

How long is State Route 86 NB over Memel Ditch?

The structure is 53 ft (16.2 m) long with a longest span of 25 ft (7.6 m) and a deck 43 ft wide.

Who owns State Route 86 NB over Memel Ditch?

It is owned by the State Highway Agency.