Directions
Impax is headquartered in Hayward, California, and has a full range of capabilities in both its Hayward and Philadelphia facilities. The Hayward facilities include four buildings: a 35,125-square-foot research and development facility, a 50,400-square-foot commercial manufacturing facility, a 14,400-square-foot administration building, and a 65,000 square foot warehouse. Our 113,000-square-foot facility in Philadelphia, Pennsylvania, serves as our primary commercial center, housing accounting, sales and marketing, packaging, warehousing and distribution.
- Hayward, California
- Headquarters and Primary Research and Development Center
- Primary Manufacturing Center
- Administration Building
- Warehouse
- Philadelphia, Pennsylvania
- Primary Commercial Center
Hayward, California
30831 Huntwood Avenue, Hayward, CA 94544
Tel: (510) 240-6000 Fax: (510) 471-3200
From the San Francisco Airport:
- Take Highway 101 South to 92 East/San Mateo Bridge/Hayward.
- Take Southbound I-880 and exit at Industrial Parkway East.
- Drive East (i.e. crossway overpass) approximately 1 mile to Huntwood Ave.
- Turn right onto Huntwood Ave. and drive approximately 1/4 mile.
- Impax is on your right hand side, immediately after the Crown Lift Truck building.
From San Jose:
- Follow the sign at the Airport to get on I-880.
- Take Northbound I-880 and exit at Whipple Road/Industrial Parkway.
- Drive East on Whipple Road for approximately 1 mile to Huntwood Ave.
- Turn left onto Huntwood Ave. and drive approximately one mile to IMPAX.
- Impax is on the left hand side.
From Northeast of Hayward:
- Take Westbound I-580.
- Take Southbound I-880 and exit at Industrial parkway East.
- Drive East (i.e. crossway overpass) approximately 1 mile to Huntwood Ave.
- Turn right onto Huntwood Ave. and drive approximately 1/4 mile.
- Impax is on your right hand side, immediately after the Crown Lift Truck building.
From Southeast of Hayward:
- Take Nortbound I-680 and exit Mission Blvd.
- Continue down Mission Boulevard to Union City.
- Take a left on Whipple Rd.
- Continue down Whipple Rd. approximately two miles to Huntwood Avenue.
- Turn right onto Huntwood Ave. and drive approximately one mile to IMPAX.
- Impax is on the left hand side.
Philadelphia, Pennsylvania
3735 Castor Avenue, Philadelphia, PA 19124
Tel: (215) 613-2400 Fax: (215) 613-2406
From the Philadelphia Airport:
- Take I-95 North to Aramingo Avenue exit.
- At end of off ramp, turn right onto Aramingo Avenue.
- Turn right at Castor Avenue and drive approximately 1 mile.
- Impax is on your right just before the elevated train.
From Northern/Central New Jersey:
- Take I-95 [New Jersey Tpke] South towards Philadelphia/Camden.
- At New Jersey Turnpike Exit 4, keep RIGHT onto Ramp towards RT-73/Philadelphia/Camden.
- Take Route 73 towards Camden/Philadelphia.
- Keep left onto Route 90 West and cross over the Betsy Ross Bridge (toll).
- Keep right onto ramp towards Richmond Street.
- Once on ramp, keep left to stay on ramp towards Richmond St South.
- Turn left onto Richmond Street.
- Turn right onto Castor Ave and drive approximately 1 mile.
- Impax is on your right just before the elevated train.
From Southern New Jersey:
- Take Route 55 to Route 42 toward Philadelphia.
- Keep left towards and over the Walt Whitman Bridge/I-76.
- Stay I-76 to right on I-95 North.
- Take I-95 North to Allegheny Avenue exit, Exit 25.
- Turn right at end of off ramp onto Bath Street.
- Turn right onto Allegheny Avenue.
- Turn right onto Richmond Street.
- Turn left at Castor Avenue and drive approximately 1 mile.
- Impax is on your right just before the elevated train.
From Points West of Philadelphia:
- Take I-76 East towards Philadelphia.
- At exit 344, take the Vine Street Expressway East.
- Stay right to I-95 North.
- Take I-95 North to Aramingo Avenue exit.
- At end of off ramp, turn right onto Aramingo Avenue.
- Turn right at Castor Avenue and drive approximately 1 mile.
- Impax is on your right just before the elevated train.
From Bucks/Montgomery Counties and Points North of Philadelphia:
- Take Route 309 South to Cheltenham Avenue.
- Continue on Cheltenham Avenue to dead end right on Tookany Creek Parkway.
- Take left onto Adams Avenue.
- Go North on the Roosevelt Boulevard, stay to the far right and take first right to the continuation of Adams Avenue.
- Follow Adams Avenue to slight right on Castor Avenue and drive approximately 3 miles.
- Impax is on your left just after the elevated train.

