US Bridges

Interstate 5 over Panorama Road

Poor

Siskiyou County, California · 02-SIS-005-1.21 · Structure no. 02 0066

Built
1960
65 years old
Condition
Poor
inspected July 2024
Type
Tee Beam
Concrete Continuous
Length
172 ft
3 main spans
Daily traffic
18,000
2024 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 over Panorama Road is a concrete continuous tee beam carrying Interstate 5 over Panorama Road in Siskiyou County, California. It was built in 1960, so it is 65 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 18,000 vehicles a day, roughly 28% of them trucks, projected to reach 26,306 by 2045. The structure is 172 ft (52.4 m) long and 87 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesInterstate 5
CrossesPanorama Road
Location02-SIS-005-1.21
RouteInterstate 5
CountySiskiyou County
StateCalifornia
Coordinates41.19941, -122.27907
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.5 US tons
Inventory rating40 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length172 ft (52.4 m)
Longest span56 ft (17 m)
Deck width87 ft (26.5 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2024)
Projected traffic26,306 by 2045
Trucks28%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.3 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 5 over Panorama Road built?

It was built in 1960, making it 65 years old in 2025.

What condition is Interstate 5 over Panorama Road in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Interstate 5 over Panorama Road carry?

About 18,000 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is Interstate 5 over Panorama Road?

The structure is 172 ft (52.4 m) long with a longest span of 56 ft (17 m) and a deck 87 ft wide.

Who owns Interstate 5 over Panorama Road?

It is owned by the State Highway Agency.