US Bridges

Rancho Santa Fe NB over San Marcos Creek

Fair

San Diego County, California · 0.2 M S/O Melrose DR · Structure no. 57C0768R

Built
2004
21 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
368 ft
3 main spans
Daily traffic
14,101
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Rancho Santa Fe NB over San Marcos Creek is a concrete continuous box beam or girders - multiple carrying Rancho Santa Fe NB over San Marcos Creek in San Diego County, California. It was built in 2004, so it is 21 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 14,101 vehicles a day, roughly 3% of them trucks, projected to reach 16,300 by 2040. The structure is 368 ft (112.2 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRancho Santa Fe NB
CrossesSan Marcos Creek
Location0.2 M S/O Melrose DR
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates33.10332, -117.22358
Functional classUrban Other Principal 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 protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length368 ft (112.2 m)
Longest span126 ft (38.4 m)
Deck width52 ft (15.8 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,101 (2017)
Projected traffic16,300 by 2040
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Rancho Santa Fe NB over San Marcos Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Rancho Santa Fe NB 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 August 2023.

How much traffic does Rancho Santa Fe NB over San Marcos Creek carry?

About 14,101 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Rancho Santa Fe NB over San Marcos Creek?

The structure is 368 ft (112.2 m) long with a longest span of 126 ft (38.4 m) and a deck 52 ft wide.

Who owns Rancho Santa Fe NB over San Marcos Creek?

It is owned by the City or Municipal Highway Agency.