US Bridges

Palomar Airport RD over Carlsbad Blvd

Good

San Diego County, California · 0.35MI W/O Route 5 · Structure no. 57C0215

Built
1953
72 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
308 ft
4 main spans
Daily traffic
7,615
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Palomar Airport RD over Carlsbad Blvd is a concrete continuous box beam or girders - multiple carrying Palomar Airport RD over Carlsbad Blvd in San Diego County, California. It was built in 1953, so it is 72 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 7,615 vehicles a day, roughly 2% of them trucks, projected to reach 10,663 by 2040. The structure is 308 ft (93.9 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPalomar Airport RD
CrossesCarlsbad Blvd
Location0.35MI W/O Route 5
RouteCity Street 0
Coordinates33.1235, -117.32767
Functional classUrban Other Principal Arterial

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.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating34.3 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length308 ft (93.9 m)
Longest span94 ft (28.7 m)
Deck width35 ft (10.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,615 (2017)
Projected traffic10,663 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Palomar Airport RD over Carlsbad Blvd built?

It was built in 1953, making it 72 years old in 2025.

What condition is Palomar Airport RD over Carlsbad Blvd 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 August 2023.

How much traffic does Palomar Airport RD over Carlsbad Blvd carry?

About 7,615 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Palomar Airport RD over Carlsbad Blvd?

The structure is 308 ft (93.9 m) long with a longest span of 94 ft (28.7 m) and a deck 35 ft wide.

Who owns Palomar Airport RD over Carlsbad Blvd?

It is owned by the City or Municipal Highway Agency.