Route 94 is mostly a two-lane undivided road that runs through mountain and valley areas of Warren and Sussex counties, serving Columbia, Blairstown, Newton, and Hamburg.

Once new ramps were completed in that area in 1972 along with US 611 being decommissioned (being replaced with PA 611), Route 94 was extended to the state line on the Portland–Columbia Toll Bridge.

Immediately after the bridge, the route comes to a complex interchange with the western terminus of US 46 as well as with I-80 a short distance later, near the community of Columbia.

[1] From here, the route becomes a two-lane undivided road that continues northeast through a mix of woods and farms with some development, passing under the abandoned Lackawanna Cut-Off.

[1] Here, Route 94 becomes High Street and passes several homes, intersecting with West End Avenue (CR 519).

[1] The road passes a mobile home park before making a turn northeast and heading into Lafayette Township.

Route 94 continues through more rural areas with occasional development and enters Sparta, where it is known as North Church Road.

[1][3] After making a sharp turn to the east, Route 94 enters Hamburg and becomes Vernon Avenue.

From this intersection, the route makes a turn to the northeast before leaving the town and heading back into Hardyston Township.

[1][3] At this point, the surroundings become more wooded and mountainous as the road passes near residential areas and reaches the community of McAfee.

[3] In McAfee, McAfee-Glenwood Road (CR 517) intersects with Route 94 and the two routes head east for a short wrong-way concurrency, crossing the New York, Susquehanna and Western Railway's New Jersey Subdivision line before CR 517 turns to the south.

[1] Route 94 continues northeast unnamed, briefly becoming a divided highway as it passes the Mountain Creek ski resort and the Mountain Creek Waterpark, passing under a pedestrian bridge between the resort and parking lot.

[12][13] That year a section of Old Mine Road was rebuilt and aligned as a four lane freeway between Columbia and the Delaware Water Gap Toll Bridge.

[15] When US 611 was removed from New Jersey in 1965, Route 94 was extended to the state line on the Portland-Columbia Toll Bridge.

[20] NJD0T hoped to get funding for the freeway in 1970 for it to become an Interstate Highway as it was planned to serve a proposed national recreation area along the Delaware River that would have been built in conjunction with the controversial Tocks Island Dam project.

This proposed Interstate, which was to run from I-80 in Hope Township to I-84 in Port Jervis and continue northeast along US 209, was denied funding.