US Bridges

S710-S5 & N5-N710 over I 5 NB & Telegraph

Fair

Los Angeles County, California · 07-LA-710-23.26-CMRC · Structure no. 53 0789E

Built
1956
69 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
462 ft
6 main spans
Daily traffic
216,000
2017 count
Owner
State
State Highway Agency

About this bridge

S710-S5 & N5-N710 over I 5 NB & Telegraph is a concrete continuous box beam or girders - multiple carrying S710-S5 & N5-N710 over I 5 NB & Telegraph in Los Angeles County, California. It was built in 1956, so it is 69 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 216,000 vehicles a day, roughly 2% of them trucks, projected to reach 230,000 by 2041. The structure is 462 ft (140.8 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesS710-S5 & N5-N710
CrossesI 5 NB & Telegraph
Location07-LA-710-23.26-CMRC
RouteInterstate 710
CountyLos Angeles County
StateCalifornia
Coordinates34.01624, -118.17269
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating110 US tons
Inventory rating61 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length462 ft (140.8 m)
Longest span125 ft (38.1 m)
Deck width58 ft (17.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic216,000 (2017)
Projected traffic230,000 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 S710-S5 & N5-N710 over I 5 NB & Telegraph built?

It was built in 1956, making it 69 years old in 2025.

What condition is S710-S5 & N5-N710 over I 5 NB & Telegraph 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 August 2024.

How much traffic does S710-S5 & N5-N710 over I 5 NB & Telegraph carry?

About 216,000 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is S710-S5 & N5-N710 over I 5 NB & Telegraph?

The structure is 462 ft (140.8 m) long with a longest span of 125 ft (38.1 m) and a deck 58 ft wide.

Who owns S710-S5 & N5-N710 over I 5 NB & Telegraph?

It is owned by the State Highway Agency.