US Bridges

State Route 86 SB over Zenas Ditch

Good

Imperial County, California · 11-IMP-086-55.51 · Structure no. 58 0040L

Built
1989
36 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete Continuous
Length
50 ft
2 main spans
Daily traffic
7,550
2021 count
Owner
State
State Highway Agency

About this bridge

State Route 86 SB over Zenas Ditch is a concrete continuous slab carrying State Route 86 SB over Zenas Ditch in Imperial County, California. It was built in 1989, so it is 36 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 7,550 vehicles a day, roughly 40% of them trucks, projected to reach 11,420 by 2040. The structure is 50 ft (15.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 86 SB
CrossesZenas Ditch
Location11-IMP-086-55.51
RouteState Highway 86
Coordinates33.27159, -115.95885
Functional classRural Principal Arterial - Other

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating42.5 US tons
Inventory rating29.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span24 ft (7.3 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,550 (2021)
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 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 86 SB over Zenas Ditch built?

It was built in 1989, making it 36 years old in 2025.

What condition is State Route 86 SB over Zenas Ditch 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 December 2023.

How much traffic does State Route 86 SB over Zenas Ditch carry?

About 7,550 vehicles per day (2021 count), of which roughly 40% are trucks.

How long is State Route 86 SB over Zenas Ditch?

The structure is 50 ft (15.2 m) long with a longest span of 24 ft (7.3 m) and a deck 41 ft wide.

Who owns State Route 86 SB over Zenas Ditch?

It is owned by the State Highway Agency.