US Bridges

State Route 86 NB over Iberia Ditch

Poor

Imperial County, California · 11-IMP-086-56.59 · Structure no. 58 0042R

Built
1981
44 years old
Condition
Poor
inspected December 2023
Type
Slab
Concrete Continuous
Length
71 ft
2 main spans
Daily traffic
7,300
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 86 NB over Iberia Ditch is a concrete continuous slab carrying State Route 86 NB over Iberia Ditch in Imperial County, California. It was built in 1981, so it is 44 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 7,300 vehicles a day, roughly 40% of them trucks, projected to reach 11,420 by 2040. The structure is 71 ft (21.6 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
CrossesIberia Ditch
Location11-IMP-086-56.59
RouteState Highway 86
CountyImperial County
StateCalifornia
Coordinates33.28514, -115.96852
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionDecember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span34 ft (10.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,300 (2019)
Projected traffic11,420 by 2040
Trucks40%
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$477,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 86 NB over Iberia Ditch built?

It was built in 1981, making it 44 years old in 2025.

What condition is State Route 86 NB over Iberia 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 December 2023.

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

About 7,300 vehicles per day (2019 count), of which roughly 40% are trucks.

How long is State Route 86 NB over Iberia Ditch?

The structure is 71 ft (21.6 m) long with a longest span of 34 ft (10.4 m) and a deck 43 ft wide.

Who owns State Route 86 NB over Iberia Ditch?

It is owned by the State Highway Agency.