US Bridges

W10-S164&N164-W10 over SR 164 (rosemead Bl)

Fair

Los Angeles County, California · 07-LA-010-26.84-RSMD · Structure no. 53 0010K

Built
1951
74 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
174 ft
4 main spans
Daily traffic
9,750
2021 count
Owner
State
State Highway Agency

About this bridge

W10-S164&N164-W10 over SR 164 (rosemead Bl) is a concrete continuous slab carrying W10-S164&N164-W10 over SR 164 (rosemead Bl) in Los Angeles County, California. It was built in 1951, so it is 74 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 9,750 vehicles a day, roughly 2% of them trucks, projected to reach 16,740 by 2045. The structure is 174 ft (53 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesW10-S164&N164-W10
CrossesSR 164 (rosemead Bl)
Location07-LA-010-26.84-RSMD
RouteInterstate 10
CountyLos Angeles County
StateCalifornia
Coordinates34.07259, -118.07331
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
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 alignment9: Superior to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length174 ft (53 m)
Longest span52 ft (15.8 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,750 (2021)
Projected traffic16,740 by 2045
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 W10-S164&N164-W10 over SR 164 (rosemead Bl) built?

It was built in 1951, making it 74 years old in 2025.

What condition is W10-S164&N164-W10 over SR 164 (rosemead Bl) 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 February 2025.

How much traffic does W10-S164&N164-W10 over SR 164 (rosemead Bl) carry?

About 9,750 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is W10-S164&N164-W10 over SR 164 (rosemead Bl)?

The structure is 174 ft (53 m) long with a longest span of 52 ft (15.8 m) and a deck 35 ft wide.

Who owns W10-S164&N164-W10 over SR 164 (rosemead Bl)?

It is owned by the State Highway Agency.