US Bridges

National City Blvd over S Chnl Sweetwater River

Fair

San Diego County, California · 150 Ft N/O "c" ST · Structure no. 57C0679

Built
2000
25 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
387 ft
5 main spans
Daily traffic
17,800
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

National City Blvd over S Chnl Sweetwater River is a concrete continuous box beam or girders - multiple carrying National City Blvd over S Chnl Sweetwater River in San Diego County, California. It was built in 2000, so it is 25 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 17,800 vehicles a day, roughly 2% of them trucks, projected to reach 22,800 by 2041. The structure is 387 ft (118 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNational City Blvd
CrossesS Chnl Sweetwater River
Location150 Ft N/O "c" ST
RouteCity Street 0
Coordinates32.6488, -117.09628
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 protection9 ExcellentNo problems noted.
Last inspectionJuly 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 geometry9: Superior to present desirable criteria
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

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length387 ft (118 m)
Longest span115 ft (35 m)
Deck width80 ft (24.4 m)
Roadway width68 ft (20.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,800 (2019)
Projected traffic22,800 by 2041
Trucks2%
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 National City Blvd over S Chnl Sweetwater River built?

It was built in 2000, making it 25 years old in 2025.

What condition is National City Blvd over S Chnl Sweetwater River 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 July 2023.

How much traffic does National City Blvd over S Chnl Sweetwater River carry?

About 17,800 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is National City Blvd over S Chnl Sweetwater River?

The structure is 387 ft (118 m) long with a longest span of 115 ft (35 m) and a deck 80 ft wide.

Who owns National City Blvd over S Chnl Sweetwater River?

It is owned by the City or Municipal Highway Agency.