US Bridges

Interstate 5 NB over Hillside

Fair

Shasta County, California · 02-SHA-005-R30.69R · Structure no. 06 0132R

Built
1968
57 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
356 ft
4 main spans
Daily traffic
18,300
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 NB over Hillside is a prestressed concrete continuous stringer/multi-beam or girder carrying Interstate 5 NB over Hillside in Shasta County, California. It was built in 1968, so it is 57 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 18,300 vehicles a day, roughly 28% of them trucks, projected to reach 36,459 by 2042. The structure is 356 ft (108.4 m) long and 41 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesInterstate 5 NB
CrossesHillside
Location02-SHA-005-R30.69R
RouteInterstate 5
Coordinates40.78877, -122.31165
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length356 ft (108.4 m)
Longest span89 ft (27.1 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,300 (2009)
Projected traffic36,459 by 2042
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Interstate 5 NB over Hillside built?

It was built in 1968, making it 57 years old in 2025.

What condition is Interstate 5 NB over Hillside 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 NB over Hillside carry?

About 18,300 vehicles per day (2009 count), of which roughly 28% are trucks.

How long is Interstate 5 NB over Hillside?

The structure is 356 ft (108.4 m) long with a longest span of 89 ft (27.1 m) and a deck 41 ft wide.

Who owns Interstate 5 NB over Hillside?

It is owned by the State Highway Agency.