US Bridges

State Route 86 NB over Alfalfa Ditch

Fair

Imperial County, California · 11-IMP-086-R40.04 · Structure no. 58 0035R

Built
1976
49 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
58 ft
2 main spans
Daily traffic
6,150
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 86 NB over Alfalfa Ditch is a concrete continuous slab carrying State Route 86 NB over Alfalfa Ditch in Imperial County, California. It was built in 1976, so it is 49 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 6,150 vehicles a day, roughly 18% of them trucks, projected to reach 13,475 by 2044. The structure is 58 ft (17.7 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState Route 86 NB
CrossesAlfalfa Ditch
Location11-IMP-086-R40.04
RouteState Highway 86
CountyImperial County
StateCalifornia
Coordinates33.10454, -115.80606
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating86.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span28 ft (8.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,150 (2020)
Projected traffic13,475 by 2044
Trucks18%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 86 NB over Alfalfa Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is State Route 86 NB over Alfalfa Ditch 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 January 2024.

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

About 6,150 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is State Route 86 NB over Alfalfa Ditch?

The structure is 58 ft (17.7 m) long with a longest span of 28 ft (8.5 m) and a deck 43 ft wide.

Who owns State Route 86 NB over Alfalfa Ditch?

It is owned by the State Highway Agency.