US Bridges

Interstate 5 over Vollmers Road

Good

Shasta County, California · 02-SHA-005-R45.95 · Structure no. 06 0181

Built
1991
34 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
17,100
2009 count
Owner
State
State Highway Agency

About this bridge

Interstate 5 over Vollmers Road is a prestressed concrete box beam or girders - multiple carrying Interstate 5 over Vollmers Road in Shasta County, California. It was built in 1991, so it is 34 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 17,100 vehicles a day, roughly 32% of them trucks, projected to reach 30,700 by 2041. The structure is 120 ft (36.6 m) long and 128 ft wide.

CarriesInterstate 5
CrossesVollmers Road
Location02-SHA-005-R45.95
RouteInterstate 5
Coordinates40.94116, -122.42993
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length120 ft (36.6 m)
Longest span117 ft (35.8 m)
Deck width128 ft (39.1 m)
Roadway width123 ft (37.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,100 (2009)
Projected traffic30,700 by 2041
Trucks32%
Lanes on structure5
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Interstate 5 over Vollmers Road built?

It was built in 1991, making it 34 years old in 2025.

What condition is Interstate 5 over Vollmers Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2024.

How much traffic does Interstate 5 over Vollmers Road carry?

About 17,100 vehicles per day (2009 count), of which roughly 32% are trucks.

How long is Interstate 5 over Vollmers Road?

The structure is 120 ft (36.6 m) long with a longest span of 117 ft (35.8 m) and a deck 128 ft wide.

Who owns Interstate 5 over Vollmers Road?

It is owned by the State Highway Agency.