US Bridges

Interstate 5 NB over Lathrop RD

Fair

San Joaquin County, California · 10-SJ-005-R17.52 · Structure no. 29 0253R

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
142 ft
1 main span
Daily traffic
42,250
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 NB over Lathrop RD is a prestressed concrete box beam or girders - multiple carrying Interstate 5 NB over Lathrop RD in San Joaquin County, California. It was built in 1971, 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 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 42,250 vehicles a day, roughly 26% of them trucks, projected to reach 86,617 by 2043. The structure is 142 ft (43.3 m) long and 53 ft wide.

CarriesInterstate 5 NB
CrossesLathrop RD
Location10-SJ-005-R17.52
RouteInterstate 5
Coordinates37.82616, -121.28988
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 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 alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating39.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span140 ft (42.8 m)
Deck width53 ft (16.1 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,250 (2009)
Projected traffic86,617 by 2043
Trucks26%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Interstate 5 NB over Lathrop RD built?

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

What condition is Interstate 5 NB over Lathrop RD 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 October 2023.

How much traffic does Interstate 5 NB over Lathrop RD carry?

About 42,250 vehicles per day (2009 count), of which roughly 26% are trucks.

How long is Interstate 5 NB over Lathrop RD?

The structure is 142 ft (43.3 m) long with a longest span of 140 ft (42.8 m) and a deck 53 ft wide.

Who owns Interstate 5 NB over Lathrop RD?

It is owned by the State Highway Agency.