US Bridges

Smith Road over Interstate 5

Fair

Shasta County, California · 02-SHA-005-R10.85 · Structure no. 06 0138

Built
1965
60 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
238 ft
4 main spans
Daily traffic
850
2014 count
Owner
State
State Highway Agency

About this bridge

Smith Road over Interstate 5 is a concrete continuous box beam or girders - multiple carrying Smith Road over Interstate 5 in Shasta County, California. It was built in 1965, so it is 60 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 850 vehicles a day, roughly 2% of them trucks, projected to reach 1,081 by 2045. The structure is 238 ft (72.5 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSmith Road
CrossesInterstate 5
Location02-SHA-005-R10.85
RouteCounty Highway 0
CountyShasta County
StateCalifornia
Coordinates40.52007, -122.34569
Functional classUrban Local

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 inspectionJune 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 rating38.3 US tons
Inventory rating29.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length238 ft (72.5 m)
Longest span81 ft (24.7 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2014)
Projected traffic1,081 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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 Smith Road over Interstate 5 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Smith Road over Interstate 5 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 June 2024.

How much traffic does Smith Road over Interstate 5 carry?

About 850 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is Smith Road over Interstate 5?

The structure is 238 ft (72.5 m) long with a longest span of 81 ft (24.7 m) and a deck 40 ft wide.

Who owns Smith Road over Interstate 5?

It is owned by the State Highway Agency.