US Bridges

Interstate 5 NB over Laguna Seca Creek Road

Fair

Merced County, California · 10-MER-005-2.86 · Structure no. 39 0151R

Built
1971
54 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
67 ft
3 main spans
Daily traffic
19,000
2020 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 NB over Laguna Seca Creek Road is a concrete continuous slab carrying Interstate 5 NB over Laguna Seca Creek Road in Merced 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 19,000 vehicles a day, roughly 29% of them trucks, projected to reach 32,864 by 2046. The structure is 67 ft (20.4 m) long and 41 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesInterstate 5 NB
CrossesLaguna Seca Creek Road
Location10-MER-005-2.86
RouteInterstate 5
CountyMerced County
StateCalifornia
Coordinates36.89137, -120.8024
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span26 ft (7.9 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2020)
Projected traffic32,864 by 2046
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed21.1 mi (34 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 Interstate 5 NB over Laguna Seca Creek Road built?

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

What condition is Interstate 5 NB over Laguna Seca Creek Road 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 January 2024.

How much traffic does Interstate 5 NB over Laguna Seca Creek Road carry?

About 19,000 vehicles per day (2020 count), of which roughly 29% are trucks.

How long is Interstate 5 NB over Laguna Seca Creek Road?

The structure is 67 ft (20.4 m) long with a longest span of 26 ft (7.9 m) and a deck 41 ft wide.

Who owns Interstate 5 NB over Laguna Seca Creek Road?

It is owned by the State Highway Agency.