US Bridges

S5-299 Connector over Boulder Creek

Fair

Shasta County, California · 02-SHA-005-R17.32-RDG · Structure no. 06 0088E

Built
1965
60 years old, rebuilt 1967
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
27,000
2014 count
Owner
State
State Highway Agency

About this bridge

S5-299 Connector over Boulder Creek is a concrete continuous culvert carrying S5-299 Connector over Boulder Creek in Shasta County, California. It was built in 1965 and reconstructed in 1967, 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 6 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 27,000 vehicles a day, roughly 16% of them trucks, projected to reach 32,754 by 2045. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesS5-299 Connector
CrossesBoulder Creek
Location02-SHA-005-R17.32-RDG
RouteInterstate 5
CountyShasta County
StateCalifornia
Coordinates40.61175, -122.36572
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,000 (2014)
Projected traffic32,754 by 2045
Trucks16%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S5-299 Connector over Boulder Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1967.

What condition is S5-299 Connector over Boulder Creek 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 S5-299 Connector over Boulder Creek carry?

About 27,000 vehicles per day (2014 count), of which roughly 16% are trucks.

How long is S5-299 Connector over Boulder Creek?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m).

Who owns S5-299 Connector over Boulder Creek?

It is owned by the State Highway Agency.