US Bridges

Interstate 5 SB over South Weed Blvd

Fair

Siskiyou County, California · 02-SIS-005-R17.44 · Structure no. 02 0162L

Built
1973
52 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
7,150
2024 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 SB over South Weed Blvd is a prestressed concrete box beam or girders - multiple carrying Interstate 5 SB over South Weed Blvd in Siskiyou County, California. It was built in 1973, so it is 52 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 7,150 vehicles a day, roughly 26% of them trucks, projected to reach 17,401 by 2045. The structure is 96 ft (29.2 m) long and 54 ft wide.

CarriesInterstate 5 SB
CrossesSouth Weed Blvd
Location02-SIS-005-R17.44
RouteInterstate 5
Coordinates41.39615, -122.38015
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJuly 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating33.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length96 ft (29.2 m)
Longest span93 ft (28.4 m)
Deck width54 ft (16.5 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,150 (2024)
Projected traffic17,401 by 2045
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 SB over South Weed Blvd built?

It was built in 1973, making it 52 years old in 2025.

What condition is Interstate 5 SB over South Weed Blvd 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 July 2024.

How much traffic does Interstate 5 SB over South Weed Blvd carry?

About 7,150 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is Interstate 5 SB over South Weed Blvd?

The structure is 96 ft (29.2 m) long with a longest span of 93 ft (28.4 m) and a deck 54 ft wide.

Who owns Interstate 5 SB over South Weed Blvd?

It is owned by the State Highway Agency.