US Bridges

West Main St. over County Ditch

Good

San Diego County, California · 180FT W/O El Cajon Blvd · Structure no. 57C0565

Built
1954
71 years old, rebuilt 1968
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
38 ft
4 main spans
Daily traffic
11,900
2016 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Main St. over County Ditch is a concrete culvert carrying West Main St. over County Ditch in San Diego County, California. It was built in 1954 and reconstructed in 1968, so it is 71 years old, older 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 11,900 vehicles a day, roughly 2% of them trucks, projected to reach 18,229 by 2042. The structure is 38 ft (11.6 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWest Main St.
CrossesCounty Ditch
Location180FT W/O El Cajon Blvd
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates32.79486, -116.96856
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span8 ft (2.5 m)
Deck width83 ft (25.4 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,900 (2016)
Projected traffic18,229 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 West Main St. over County Ditch built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1968.

What condition is West Main St. over County 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 September 2023.

How much traffic does West Main St. over County Ditch carry?

About 11,900 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is West Main St. over County Ditch?

The structure is 38 ft (11.6 m) long with a longest span of 8 ft (2.5 m) and a deck 83 ft wide.

Who owns West Main St. over County Ditch?

It is owned by the City or Municipal Highway Agency.