US Bridges

Interstate 5 SB over Diablo Grande Pkwy

Fair

Stanislaus County, California · 10-STA-005-15.86 · Structure no. 38 0119L

Built
1967
58 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
126 ft
3 main spans
Daily traffic
20,500
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 SB over Diablo Grande Pkwy is a concrete continuous tee beam carrying Interstate 5 SB over Diablo Grande Pkwy in Stanislaus County, California. It was built in 1967, so it is 58 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 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 20,500 vehicles a day, roughly 25% of them trucks, projected to reach 27,930 by 2046. The structure is 126 ft (38.4 m) long and 42 ft wide.

CarriesInterstate 5 SB
CrossesDiablo Grande Pkwy
Location10-STA-005-15.86
RouteInterstate 5
Coordinates37.46352, -121.18039
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.7 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length126 ft (38.4 m)
Longest span60 ft (18.3 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,500 (2009)
Projected traffic27,930 by 2046
Trucks25%
Lanes on structure2
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 SB over Diablo Grande Pkwy built?

It was built in 1967, making it 58 years old in 2025.

What condition is Interstate 5 SB over Diablo Grande Pkwy 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 February 2024.

How much traffic does Interstate 5 SB over Diablo Grande Pkwy carry?

About 20,500 vehicles per day (2009 count), of which roughly 25% are trucks.

How long is Interstate 5 SB over Diablo Grande Pkwy?

The structure is 126 ft (38.4 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.

Who owns Interstate 5 SB over Diablo Grande Pkwy?

It is owned by the State Highway Agency.