US Bridges

Grand Ave over Rose Canyon Creek

Poor

San Diego County, California · 0.4 MI W/O Mission Bay DR · Structure no. 57C0525

Built
1956
69 years old
Condition
Poor
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
156 ft
3 main spans
Daily traffic
39,700
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Grand Ave over Rose Canyon Creek is a concrete continuous box beam or girders - multiple carrying Grand Ave over Rose Canyon Creek in San Diego County, California. It was built in 1956, so it is 69 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 39,700 vehicles a day, roughly 1% of them trucks, projected to reach 50,795 by 2045. The structure is 156 ft (47.5 m) long and 97 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesGrand Ave
CrossesRose Canyon Creek
Location0.4 MI W/O Mission Bay DR
RouteCity Street 0
Coordinates32.80168, -117.22231
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110 US tons
Inventory rating69.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span51 ft (15.5 m)
Deck width97 ft (29.6 m)
Roadway width64 ft (19.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,700 (2023)
Projected traffic50,795 by 2045
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 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.4 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Grand Ave over Rose Canyon Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Grand Ave over Rose Canyon Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does Grand Ave over Rose Canyon Creek carry?

About 39,700 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Grand Ave over Rose Canyon Creek?

The structure is 156 ft (47.5 m) long with a longest span of 51 ft (15.5 m) and a deck 97 ft wide.

Who owns Grand Ave over Rose Canyon Creek?

It is owned by the City or Municipal Highway Agency.