US Bridges

Nancy Ridge Drive over Carroll Canyon Creek

Fair

San Diego County, California · 150FT S/O Carroll Cyn RD · Structure no. 57C0884

Built
1993
32 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete Continuous
Length
51 ft
4 main spans
Daily traffic
3,047
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nancy Ridge Drive over Carroll Canyon Creek is a concrete continuous culvert carrying Nancy Ridge Drive over Carroll Canyon Creek in San Diego County, California. It was built in 1993, so it is 32 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 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 3,047 vehicles a day, roughly 1% of them trucks, projected to reach 4,290 by 2040. The structure is 51 ft (15.4 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNancy Ridge Drive
CrossesCarroll Canyon Creek
Location150FT S/O Carroll Cyn RD
RouteCity Street 0
CountySan Diego County
StateCalifornia
Coordinates32.89144, -117.192
Functional classUrban Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span12 ft (3.6 m)
Deck width46 ft (14 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,047 (2017)
Projected traffic4,290 by 2040
Trucks1%
Lanes on structure2
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 Nancy Ridge Drive over Carroll Canyon Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is Nancy Ridge Drive over Carroll Canyon 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 October 2023.

How much traffic does Nancy Ridge Drive over Carroll Canyon Creek carry?

About 3,047 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Nancy Ridge Drive over Carroll Canyon Creek?

The structure is 51 ft (15.4 m) long with a longest span of 12 ft (3.6 m) and a deck 46 ft wide.

Who owns Nancy Ridge Drive over Carroll Canyon Creek?

It is owned by the City or Municipal Highway Agency.