[2][3] Route 147 begins in Agawam as a continuation of Springfield Street.

The route runs northeast for two miles (3 km) then turns east at the intersection with North Street.

At the intersection, Route 147 takes a left turn onto the Anne Sullivan bridge over the Westfield River and enters West Springfield.

The route continues down Memorial Avenue past the large former Boston and Albany, now CSX, rail freight yard.

Route 147 then continues past the Century Center shopping center before ending at US 5 (Riverdale Street) at a rotary adjacent to the Memorial Bridge over the Connecticut River into Springfield.