US Bridges

Avenue "n" over Route 14

Fair

Los Angeles County, California · 07-LA-014-R63.67 · Structure no. 53 2222

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
276 ft
2 main spans
Daily traffic
4,900
2017 count
Owner
State
State Highway Agency

About this bridge

Avenue "n" over Route 14 is a prestressed concrete continuous box beam or girders - multiple carrying Avenue "n" over Route 14 in Los Angeles County, California. It was built in 1970, so it is 55 years old, older 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 4,900 vehicles a day, roughly 1% of them trucks, projected to reach 7,211 by 2041. The structure is 276 ft (84.1 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesAvenue "n"
CrossesRoute 14
Location07-LA-014-R63.67
RouteCounty Highway 0
Coordinates34.63104, -118.15362
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating29.3 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length276 ft (84.1 m)
Longest span137 ft (41.8 m)
Deck width51 ft (15.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2017)
Projected traffic7,211 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Avenue "n" over Route 14 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Avenue "n" over Route 14 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 April 2023.

How much traffic does Avenue "n" over Route 14 carry?

About 4,900 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Avenue "n" over Route 14?

The structure is 276 ft (84.1 m) long with a longest span of 137 ft (41.8 m) and a deck 51 ft wide.

Who owns Avenue "n" over Route 14?

It is owned by the State Highway Agency.