Client
California Department of Transportation
Completion Date
2026
Designer
California Department of Transportation
Location
Paso Robles, California
Delivery Method
Construction Manager/General Contractor (CMGC)
Division
California
Contract Value
$268 million
![Aerial of two new bridges](/sites/default/files/styles/project_hero/public/2024-02/image%20-%202024-02-14T073957.621.png?h=bfa71e2c&itok=QFhgQr43)
![Aerial of new SR 46 lanes open to traffic](/sites/default/files/styles/project_hero/public/2024-02/image%20-%202024-02-14T073956.175.png?h=c54def77&itok=xCLYd47y)
![Aerial side view of new bridges](/sites/default/files/styles/project_hero/public/2024-02/image%20-%202024-02-14T073954.657.png?h=973281bf&itok=ot7y_9Wo)
Atkinson is providing CMGC services for the conversion of existing two-lane SR-46 to a four-lane divided expressway, east of the town of Shandon in San Luis Obispo County stretching for 13 miles. The project also includes constructing a trumpet style interchange at SR-46/SR-41. The project is broken down into three segments: Cholame, Wye, and Antelope Grade, and includes seven bridges, 24 miles of two-lane continuously reinforced concrete pavement (CRCP), 5.5 million cubic yards of earthwork, two mini-CHP inspection stations (non-habitable), associated drainage and roadway work, third-party utility coordination, and environmental permitting support.