US Bridges

State Route 299 WB over Hawley Road

Good

Shasta County, California · 02-SHA-299-25.54 · Structure no. 06 0177L

Built
1974
51 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
146 ft
1 main span
Daily traffic
10,100
2021 count
Owner
State
State Highway Agency

About this bridge

State Route 299 WB over Hawley Road is a prestressed concrete box beam or girders - multiple carrying State Route 299 WB over Hawley Road in Shasta County, California. It was built in 1974, so it is 51 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 10,100 vehicles a day, roughly 3% of them trucks, projected to reach 17,115 by 2041. The structure is 146 ft (44.5 m) long and 41 ft wide.

CarriesState Route 299 WB
CrossesHawley Road
Location02-SHA-299-25.54
RouteState Highway 299
Coordinates40.61478, -122.35008
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionApril 2023
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 rating40.3 US tons
Inventory rating24.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span144 ft (43.9 m)
Deck width41 ft (12.5 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,100 (2021)
Projected traffic17,115 by 2041
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 State Route 299 WB over Hawley Road built?

It was built in 1974, making it 51 years old in 2025.

What condition is State Route 299 WB over Hawley 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 April 2023.

How much traffic does State Route 299 WB over Hawley Road carry?

About 10,100 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is State Route 299 WB over Hawley Road?

The structure is 146 ft (44.5 m) long with a longest span of 144 ft (43.9 m) and a deck 41 ft wide.

Who owns State Route 299 WB over Hawley Road?

It is owned by the State Highway Agency.