US Bridges

Site 1 South Acces over Anaverde Creek

Fair

Los Angeles County, California · Site 1 South Entrance Int · Structure no. AF69TTQK0012011

Built
1954
71 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
24 ft
3 main spans
Daily traffic
40
2017 count
Owner
Federal
Air Force

About this bridge

Site 1 South Acces over Anaverde Creek is a steel culvert carrying Site 1 South Acces over Anaverde Creek in Los Angeles County, California. It was built in 1954, so it is 71 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 40 vehicles a day, projected to reach 48 by 2037. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSite 1 South Acces
CrossesAnaverde Creek
LocationSite 1 South Entrance Int
CountyLos Angeles County
StateCalifornia
Coordinates34.63603, -118.10233
Functional classRural 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 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 within limits of footing or piles
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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span7 ft (2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2017)
Projected traffic48 by 2037
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerAir Force
Maintained byAir Force
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$23,000 (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Site 1 South Acces over Anaverde Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Site 1 South Acces over Anaverde 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 Site 1 South Acces over Anaverde Creek carry?

About 40 vehicles per day (2017 count).

How long is Site 1 South Acces over Anaverde Creek?

The structure is 24 ft (7.3 m) long with a longest span of 7 ft (2 m).

Who owns Site 1 South Acces over Anaverde Creek?

It is owned by the Air Force.