US Bridges

Hermosa DR over Eaton Wash

Fair

Los Angeles County, California · 0.3MI W/O Rosemead Blvd · Structure no. 53C1436

Built
1955
70 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
42 ft
1 main span
Daily traffic
2,652
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hermosa DR over Eaton Wash is a concrete slab carrying Hermosa DR over Eaton Wash in Los Angeles County, California. It was built in 1955, so it is 70 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 6 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 2,652 vehicles a day, projected to reach 2,917 by 2044. The structure is 42 ft (12.8 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesHermosa DR
CrossesEaton Wash
Location0.3MI W/O Rosemead Blvd
RouteCity Street 7QS1
CountyLos Angeles County
StateCalifornia
Coordinates34.10623, -118.07836
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span35 ft (10.7 m)
Deck width51 ft (15.6 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,652 (2017)
Projected traffic2,917 by 2044
Trucks0%
Lanes on structure2
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hermosa DR over Eaton Wash built?

It was built in 1955, making it 70 years old in 2025.

What condition is Hermosa DR over Eaton Wash 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 January 2025.

How much traffic does Hermosa DR over Eaton Wash carry?

About 2,652 vehicles per day (2017 count).

How long is Hermosa DR over Eaton Wash?

The structure is 42 ft (12.8 m) long with a longest span of 35 ft (10.7 m) and a deck 51 ft wide.

Who owns Hermosa DR over Eaton Wash?

It is owned by the City or Municipal Highway Agency.