US Bridges

The Old RD over Sptco Abnd

Fair

Los Angeles County, California · 0.5MI N/O Magic Mtn Pkwy · Structure no. 53C0328

Built
1928
97 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
30,894
2017 count
Owner
County
County Highway Agency

About this bridge

The Old RD over Sptco Abnd is a steel stringer/multi-beam or girder carrying The Old RD over Sptco Abnd in Los Angeles County, California. It was built in 1928, so it is 97 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 30,894 vehicles a day, roughly 10% of them trucks, projected to reach 37,072 by 2043. The structure is 47 ft (14.3 m) long and 50 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesThe Old RD
CrossesSptco Abnd
Location0.5MI N/O Magic Mtn Pkwy
RouteCounty Highway 0WP16
Coordinates34.42852, -118.58685
Functional classRural Minor 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
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.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating62.2 US tons
Inventory rating37.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length47 ft (14.3 m)
Longest span45 ft (13.7 m)
Deck width50 ft (15.1 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,894 (2017)
Projected traffic37,072 by 2043
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesPedestrian / bicycle
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 The Old RD over Sptco Abnd built?

It was built in 1928, making it 97 years old in 2025.

What condition is The Old RD over Sptco Abnd 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 March 2024.

How much traffic does The Old RD over Sptco Abnd carry?

About 30,894 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is The Old RD over Sptco Abnd?

The structure is 47 ft (14.3 m) long with a longest span of 45 ft (13.7 m) and a deck 50 ft wide.

Who owns The Old RD over Sptco Abnd?

It is owned by the County Highway Agency.