US Bridges

Highland Valley RD over Santa Maria Creek

Fair

San Diego County, California · 3.1 MI N/W of SR-67 · Structure no. 57C0733

Built
1994
31 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
57 ft
4 main spans
Daily traffic
1,869
2023 count
Owner
County
County Highway Agency

About this bridge

Highland Valley RD over Santa Maria Creek is a steel culvert carrying Highland Valley RD over Santa Maria Creek in San Diego County, California. It was built in 1994, so it is 31 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 1,869 vehicles a day, roughly 3% of them trucks, projected to reach 3,207 by 2045. The structure is 57 ft (17.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesHighland Valley RD
CrossesSanta Maria Creek
Location3.1 MI N/W of SR-67
RouteCounty Highway 0
CountySan Diego County
StateCalifornia
Coordinates33.03309, -116.9504
Functional classUrban Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length57 ft (17.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,869 (2023)
Projected traffic3,207 by 2045
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Highland Valley RD over Santa Maria Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Highland Valley RD over Santa Maria 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 Highland Valley RD over Santa Maria Creek carry?

About 1,869 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Highland Valley RD over Santa Maria Creek?

The structure is 57 ft (17.3 m) long with a longest span of 12 ft (3.7 m).

Who owns Highland Valley RD over Santa Maria Creek?

It is owned by the County Highway Agency.