US Bridges

Carlsbad Blvd over Encina Discharge Ch

Fair

San Diego County, California · 0.5 MI N/O Cannon RD · Structure no. 57C0307

Built
1954
71 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
22,760
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Carlsbad Blvd over Encina Discharge Ch is a concrete continuous culvert carrying Carlsbad Blvd over Encina Discharge Ch in San Diego County, California. It was built in 1954, 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 fair condition with a lowest component rating of 6 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 22,760 vehicles a day, roughly 1% of them trucks, projected to reach 34,142 by 2045. The structure is 28 ft (8.5 m) long and 97 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCarlsbad Blvd
CrossesEncina Discharge Ch
Location0.5 MI N/O Cannon RD
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates33.13864, -117.33889
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span12 ft (3.7 m)
Deck width97 ft (29.6 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,760 (2017)
Projected traffic34,142 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Carlsbad Blvd over Encina Discharge Ch built?

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

What condition is Carlsbad Blvd over Encina Discharge Ch 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 August 2023.

How much traffic does Carlsbad Blvd over Encina Discharge Ch carry?

About 22,760 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Carlsbad Blvd over Encina Discharge Ch?

The structure is 28 ft (8.5 m) long with a longest span of 12 ft (3.7 m) and a deck 97 ft wide.

Who owns Carlsbad Blvd over Encina Discharge Ch?

It is owned by the City or Municipal Highway Agency.