State Route 46 East/Union Road Intersection Improvements

proposed

Caltrans and the City of Paso Robles propose to construct, in two phases, an overcrossing and partial cloverleaf interchange at the intersection of State Route 46 East and Union Road/Paso Robles Boulevard from post miles 30.7 to 32.4 on State Route 46 East in the City of Paso Robles, in the County of San Luis Obispo. Phase 1 of the project would convert a portion of State Route 46 from an at-grade intersection at Union Road/Paso Robles Boulevard into a new grade-separated overcrossing with an associated north-south extension of Union Road over State Route 46 (referred to as Union Road Overcrossing/Extension). North of State Route 46, Paso Robles Boulevard would be realigned to accommodate the proposed Union Road Overcrossing/Extension. The existing Union Road would be closed and removed, and a new connection with State Route 46 (referred to as Union Road Connector) would be constructed to intersect with the new Union Road west of the proposed Union Road Overcrossing/Extension. Two roundabouts would be constructed at the following locations to connect the proposed north-south Union Road Overcrossing/Extension with local roadways and accommodate future roadway improvements: • 1) North of State Route 46, a roundabout would be constructed at the eastern terminus of the proposed extension of Tractor Street to the northern terminus of the proposed Union Road Overcrossing/Extension. • 2) South of State Route 46, a roundabout would be constructed within the central portion of the proposed Union Road realignment and the southern terminus of the proposed Union Road Overcrossing/Extension. Additional State Route 46 improvements would include Huer Huero Creek Bridge widening and median improvements, including removing the existing State Route 46 median and building new medians on State Route 46 beneath the new Union Road Overcrossing/Extension and at the intersection of State Route 46 and Airport Road. State Route 46 access restrictions (right-turn in and right-turn out only) would occur at the existing Paso Robles Boulevard and Airport Road. Phase 2 of the project would expand upon Phase 1 and would include the construction of a partial cloverleaf interchange with access ramps. The Union Road Overcrossing/Extension would be widened, as well as the roundabout approaches, from Union Road to the south and Tractor Street to the north. Both roundabouts would be restriped from one lane to two lanes. A collector-distributor, which would be constructed along State Route 46, would extend from east of the State Route 46 westbound exit to the State Route 46 and Union Road interchange through the west side of the southbound right-turn entrance from Golden Hill Road to westbound State Route 46 at the Golden Hill Road and State Route 46 intersection. The Huer Huero Creek Bridge Overcrossing would be widened to accommodate the westbound collector-distributor. State Route 46 access restrictions would occur at the existing Union Road, Paso Robles Boulevard, Airport Road, and Golden Hill Road as the Union Road Connector; Paso Robles Boulevard and Airport Road would become a cul-de-sac. Additional State Route 46 improvements would include the construction of a new median at the intersection with Golden Hill Road, which would eliminate the existing signal control and restrict movement to allow eastbound and westbound right-turn-in and right-turn-out movements.