US Bridges

Borden RD over San Marcos Creek

Fair

San Diego County, California · 230FT E/O Twin Oak Vly RD · Structure no. 57C0840

Built
2014
11 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
205 ft
2 main spans
Daily traffic
12,500
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Borden RD over San Marcos Creek is a prestressed concrete stringer/multi-beam or girder carrying Borden RD over San Marcos Creek in San Diego County, California. It was built in 2014, so it is 11 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 12,500 vehicles a day, roughly 1% of them trucks, projected to reach 13,438 by 2041. The structure is 205 ft (62.6 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBorden RD
CrossesSan Marcos Creek
Location230FT E/O Twin Oak Vly RD
RouteCity Street 0
Coordinates33.15084, -117.16087
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length205 ft (62.6 m)
Longest span103 ft (31.4 m)
Deck width76 ft (23.1 m)
Roadway width65 ft (19.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2019)
Projected traffic13,438 by 2041
Trucks1%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Borden RD over San Marcos Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is Borden RD over San Marcos Creek 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 March 2023.

How much traffic does Borden RD over San Marcos Creek carry?

About 12,500 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Borden RD over San Marcos Creek?

The structure is 205 ft (62.6 m) long with a longest span of 103 ft (31.4 m) and a deck 76 ft wide.

Who owns Borden RD over San Marcos Creek?

It is owned by the City or Municipal Highway Agency.