US Bridges

Interstate 5 over Castle Creek Road

Poor

Shasta County, California · 02-SHA-005-63.58 · Structure no. 06 0117

Built
1960
65 years old
Condition
Poor
inspected March 2024
Type
Tee Beam
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
18,000
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 over Castle Creek Road is a concrete continuous tee beam carrying Interstate 5 over Castle Creek Road in Shasta 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 30,596 by 2041. The structure is 125 ft (38.1 m) long and 87 ft wide.

Location

Open in Google Maps
CarriesInterstate 5
CrossesCastle Creek Road
Location02-SHA-005-63.58
RouteInterstate 5
CountyShasta County
StateCalifornia
Coordinates41.14828, -122.31602
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating44.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span60 ft (18.3 m)
Deck width87 ft (26.4 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2009)
Projected traffic30,596 by 2041
Trucks28%
Lanes on structure4
Traffic directionTwo-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 5 over Castle Creek Road built?

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

What condition is Interstate 5 over Castle Creek 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 March 2024.

How much traffic does Interstate 5 over Castle Creek Road carry?

About 18,000 vehicles per day (2009 count), of which roughly 28% are trucks.

How long is Interstate 5 over Castle Creek Road?

The structure is 125 ft (38.1 m) long with a longest span of 60 ft (18.3 m) and a deck 87 ft wide.

Who owns Interstate 5 over Castle Creek Road?

It is owned by the State Highway Agency.