US Bridges

Redwood Blvd over Boulder Creek

Fair

Shasta County, California · 0.2 MI W & N S.R. 273 · Structure no. 06C0336

Built
1982
43 years old
Condition
Fair
inspected May 2023
Type
Arch - Deck
Steel
Length
30 ft
1 main span
Daily traffic
2,536
2012 count
Owner
City
City or Municipal Highway Agency

About this bridge

Redwood Blvd over Boulder Creek is a steel arch - deck carrying Redwood Blvd over Boulder Creek in Shasta County, California. It was built in 1982, so it is 43 years old, younger 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 2,536 vehicles a day, roughly 1% of them trucks, projected to reach 3,221 by 2043. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesRedwood Blvd
CrossesBoulder Creek
Location0.2 MI W & N S.R. 273
RouteCity Street 0
CountyShasta County
StateCalifornia
Coordinates40.61602, -122.37492
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,536 (2012)
Projected traffic3,221 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Redwood Blvd over Boulder Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is Redwood Blvd 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 May 2023.

How much traffic does Redwood Blvd over Boulder Creek carry?

About 2,536 vehicles per day (2012 count), of which roughly 1% are trucks.

How long is Redwood Blvd over Boulder Creek?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m).

Who owns Redwood Blvd over Boulder Creek?

It is owned by the City or Municipal Highway Agency.