Route 29 is a
state highway in the
U.S. state of
New Jersey. It runs from an intersection with
Interstate 295 in
Hamilton Township in
Mercer County, where it continues as
Interstate 195, to
Route 12 (Bridge Street / Race Street) in
Frenchtown,
Hunterdon County. Between the southern terminus and
Interstate 95, the route is a mix of
freeway and four-lane
divided highway that runs along the
Delaware River through
Trenton. This section includes a truck-restricted tunnel that was built along the river near historic houses and
Riverview Cemetery. North of Interstate 95, Route 29 turns into a scenic and mostly two-lane highway. North of the South Trenton Tunnel, it is designated the
Delaware River Scenic Byway, a
New Jersey Scenic Byway and
National Scenic Byway, that follows the Delaware River in mostly rural sections of Mercer County and Hunterdon County. The obsolete
Delaware & Raritan Canal usually stands between the river and the highway. Most sections of this portion of Route 29 are completely shaded due to the tree canopy. Route 29 also has a spur,
Route 129, which connects Route 29 to
U.S. Route 1 in Trenton.