US Bridges

Boyd Road over East Highline Canal

Poor

Imperial County, California · 1.1 MI E/O Highline RD · Structure no. 58C0134

Built
1975
50 years old
Condition
Poor
inspected January 2024
Type
Slab
Concrete Continuous
Length
107 ft
4 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

Boyd Road over East Highline Canal is a concrete continuous slab carrying Boyd Road over East Highline Canal in Imperial County, California. It was built in 1975, so it is 50 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 50 vehicles a day, roughly 5% of them trucks, projected to reach 56 by 2044. The structure is 107 ft (32.6 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesBoyd Road
CrossesEast Highline Canal
Location1.1 MI E/O Highline RD
RouteCounty Highway 0
CountyImperial County
StateCalifornia
Coordinates32.90205, -115.29306
Functional classRural Minor Collector

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 inspectionJanuary 2024
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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating104.3 US tons
Inventory rating62.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span26 ft (7.9 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic56 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$529,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Boyd Road over East Highline Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is Boyd Road over East Highline Canal 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 January 2024.

How much traffic does Boyd Road over East Highline Canal carry?

About 50 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Boyd Road over East Highline Canal?

The structure is 107 ft (32.6 m) long with a longest span of 26 ft (7.9 m) and a deck 32 ft wide.

Who owns Boyd Road over East Highline Canal?

It is owned by the County Highway Agency.