US Bridges

S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5

Good

Los Angeles County, California · 07-LA-005S-C45.76 · Structure no. 53 0849K

Built
1971
54 years old, rebuilt 1995
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
224 ft
3 main spans
Daily traffic
224
2018 count
Owner
State
State Highway Agency

About this bridge

S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5 is a concrete continuous box beam or girders - multiple carrying S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5 in Los Angeles County, California. It was built in 1971 and reconstructed in 1995, so it is 54 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 224 vehicles a day, roughly 30% of them trucks, projected to reach 274 by 2041. The structure is 224 ft (68.3 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesS5TRK-SIERRA HWY
CrossesMetrolink&up RR TUNNEL#5
Location07-LA-005S-C45.76
RouteInterstate 5
CountyLos Angeles County
StateCalifornia
Coordinates34.33556, -118.50761
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span77 ft (23.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic224 (2018)
Projected traffic274 by 2041
Trucks30%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed5 mi (8 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 S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1995.

What condition is S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5 carry?

About 224 vehicles per day (2018 count), of which roughly 30% are trucks.

How long is S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5?

The structure is 224 ft (68.3 m) long with a longest span of 77 ft (23.5 m) and a deck 26 ft wide.

Who owns S5TRK-SIERRA HWY over Metrolink&up RR TUNNEL#5?

It is owned by the State Highway Agency.