US Bridges

Nadeau ST over Acta

Fair

Los Angeles County, California · 40FT E/O Alameda ST · Structure no. 53C2129

Built
2000
25 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
15,014
2017 count
Owner
County
County Highway Agency

About this bridge

Nadeau ST over Acta is a prestressed concrete tee beam carrying Nadeau ST over Acta in Los Angeles County, California. It was built in 2000, so it is 25 years old, younger 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 15,014 vehicles a day, roughly 24% of them trucks, projected to reach 18,017 by 2041. The structure is 59 ft (17.9 m) long and 104 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesNadeau ST
CrossesActa
Location40FT E/O Alameda ST
RouteCounty Highway 0L644
CountyLos Angeles County
StateCalifornia
Coordinates33.96733, -118.23307
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length59 ft (17.9 m)
Longest span51 ft (15.6 m)
Deck width104 ft (31.6 m)
Roadway width65 ft (19.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,014 (2017)
Projected traffic18,017 by 2041
Trucks24%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 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 Nadeau ST over Acta built?

It was built in 2000, making it 25 years old in 2025.

What condition is Nadeau ST over Acta 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 December 2024.

How much traffic does Nadeau ST over Acta carry?

About 15,014 vehicles per day (2017 count), of which roughly 24% are trucks.

How long is Nadeau ST over Acta?

The structure is 59 ft (17.9 m) long with a longest span of 51 ft (15.6 m) and a deck 104 ft wide.

Who owns Nadeau ST over Acta?

It is owned by the County Highway Agency.