The first 12 miles or so of the highway, between Chester and Morristown, are a section of the old Washington Turnpike (along with parts of SR 513, SR 517, and NJ 57). This part of the road was legislated to become NJ 24 (and signs are still posted to that effect), but was never actually taken over by the state. East of Morristown, SR 510 leaves the Route 24 corridor and heads toward Newark on Columbia Turnpike and, for most of its length in Essex County, South Orange Avenue. These two roads, together, comprise the old Newark and Morris Turnpike.
A portion of the highway in Morristown is eastbound only, along Morris Street. Westbound traffic diverts to Lafayette Street. I have listed the roadways together in this log, using estimated mileage along Lafayette Street.
| Mile | Street Name | Feature | ||
| Road continues eastward as Market St | ||||
| 29.58 | Eastern terminus of , Newark City, Essex Co |
|||
| 29.58 | Market St |  McCarter Hwy |
 |
McCarter Hwy |
| 29.50 | Market St | Pedestrian crossing | underpass | Pedestrian crossing |
| 29.42 | Market St | Mulberry St | |
Mulberry St |
| 29.35 | Market St | Beaver St | |
|
| 29.27 | Market St | Broad St | |
Broad St |
| 29.18 | Market St | Halsey St | |
Halsey St |
| 29.10 | Market St | Washington St | |
Washington St |
| 29.02 | Market St | University Ave | |
University Ave |
| 28.99 | Springfield Ave | Market St | |
|
| 28.84 | Springfield Ave | High St | |
High St |
| 28.80 | South Orange Ave | |
Springfield Ave |
|
| 28.43 | South Orange Ave | Norfolk St | |
Norfolk St |
| 28.25 | South Orange Ave | Hospital entrance | |
Bruce St |
| 28.10 | South Orange Ave | Bergen St | |
Bergen St |
| 27.94 | South Orange Ave | Littleton St | |
Littleton St |
| 27.75 | South Orange Ave | 9 St | |
9 St |
| 27.70 | South Orange Ave | 10 St | |
10 St |
| 27.65 | South Orange Ave | 11 St | |
11 St |
| 27.60 | South Orange Ave | 12 St | |
12 St |
| 27.49 | South Orange Ave | |
14 St | |
| 27.30 | South Orange Ave | 18 St | |
18 St |
| 27.24 | South Orange Ave | 19 St | |
19 St |
| 27.11 | South Orange Ave |  Grove St |
|
Grove St |
| 26.98 | South Orange Ave | |
Speedway Ave | |
| 26.95 | South Orange Ave |   Garden State Pkwy |
overpass | Garden State Pkwy |
| 26.85 | South Orange Ave | Maybaum Ave | |
|
| 26.75 | South Orange Ave | Munn Ave | |
Munn Ave |
| 26.57 | South Orange Ave | |
Vermont Ave | |
| 26.53 | South Orange Ave | |
West End Ave | |
| 26.53 | South Orange Ave | Newark City, Essex Co East Orange City, Essex Co |
||
| 26.44 | South Orange Ave | Hillcrest Terr | |
Alexander St |
| 26.22 | South Orange Ave | Clinton St | |
Brookdale Ave |
| 26.14 | South Orange Ave | Stuyvesant Ave | |
Stuyvesant Ave |
| 26.11 | South Orange Ave | Newark City, Essex Co East Orange City, Essex Co |
||
| 25.97 | South Orange Ave |  Sanford Ave |
|
Sanford Ave |
| 25.82 | South Orange Ave | Poe Ave | |
Oakland Terr |
| 25.72 | South Orange Ave | Longfellow Ave | |
Dover St |
| 25.71 | South Orange Ave | Newark City, Essex Co South Orange Village Twp, Essex Co |
||
| 25.40 | South Orange Ave | Centre St Turrell Ave |
|
Seton Hall University |
| 25.07 | South Orange Ave | University Ct | |
Ward Pl |
| 24.71 | South Orange Ave | |
Prospect St | |
| 24.59 | South Orange Ave | Irvington Ave |
||
| 24.56 | South Orange Ave |  Scotland Rd |
|
Valley St connector |
| 24.53 | South Orange Ave | |
Valley St SPUR |
|
| 24.43 | South Orange Ave | Lackawanna Railroad | underpass | Lackawanna Railroad |
| 24.35 | South Orange Ave | East Branch Rahway River | bridge | East Branch Rahway River |
| 24.24 | South Orange Ave | Ridgewood Rd | |
Ridgewood Rd |
| 23.79 | South Orange Ave |  Wyoming Ave |
|
|
| 23.68 | South Orange Ave | |
Wyoming Ave |
|
| 23.40 | South Orange Ave | South Orange Village Twp, Essex Co Maplewood Twp, Essex Co |
||
| 23.12 | South Orange Ave | Glenview Ave | |
|
| 23.11 | South Orange Ave | South Orange Village Twp, Essex Co Maplewood Twp, Essex Co |
||
| 22.51 | South Orange Ave | South Mountain Reservation | underpass | South Mountain Reservation |
| 22.37 | South Orange Ave | Maplewood Twp, Essex Co Millburn Twp, Essex Co |
||
| 22.37 | South Orange Ave | West Branch Rahway River | bridge | West Branch Rahway River |
| 22.10 | South Orange Ave | Cherry Ln | |
Cherry Ln |
| 21.60 | South Orange Ave |  Old Short Hills Rd |
|
Old Short Hills Rd |
| 20.94 | South Orange Ave | Millburn Twp, Essex Co Livingston Twp, Essex Co |
||
| 20.69 | South Orange Ave |  Hobart Gap Rd |
|
Hobart Gap Rd |
| 20.36 | South Orange Ave | Canoe Brook | culvert | Canoe Brook |
| 20.19 | South Orange Ave |  John F Kennedy Pkwy |
|
John F Kennedy Pkwy |
| 19.77 | South Orange Ave | Slough Brook | culvert | Slough Brook |
| 18.96 | South Orange Ave |  Walnut St |
|
Walnut St |
| 18.75 | South Orange Ave | Shopping center entrance | |
Plant entrance |
| 18.54 | South Orange Ave |  Eisenhower Pkwy |
|
|
| 18.36 | South Orange Ave | Newark Academy | |
Peachtree Hill Rd |
| 18.25 | South Orange Ave | Branch Passaic River | bridge | Branch Passaic River |
| 17.95 | |
Livingston Twp, Essex Co Florham Park Boro, Morris Co |
||
| 17.95 | |
Passaic River | bridge | Passaic River |
| 17.74 | Columbia Tpk | Vreeland Rd | |
|
| 17.23 | Columbia Tpk | Crescent Rd | |
Crescent Rd |
| 16.69 | Columbia Tpk | Hanover Rd |
|
|
| 16.62 | Columbia Tpk |  Ridgedale Ave |
|
Ridgedale Ave |
| 16.43 | Columbia Tpk | James St | |
Shopping center entrance |
| 16.29 | Columbia Tpk | Park St | |
Park St |
| 15.85 | Columbia Tpk | Hassock Brook | culvert | Hassock Brook |
| 15.58 | Columbia Tpk | |
Plant entrance | |
| 15.38 | Columbia Tpk | Black River | bridge | Black River |
| 14.84 | Columbia Tpk | Florham Park Boro, Morris Co Hanover Twp, Morris Co |
||
| 14.60 | Columbia Tpk |  |
underpass | |
| 14.23 | Columbia Tpk | Hanover Twp, Morris Co Morris Twp, Morris Co |
||
| 14.23 | Columbia Ave |  Park Ave |
|
Park Ave |
| 13.92 | Columbia Ave | Normandy Heights Rd | |
Private road |
| 13.76 | Columbia Ave | |
Private road | |
| 13.51 | Columbia Ave | Woodruff Rd | |
Normandy Pkwy |
| 12.94 | Columbia Ave | Morris Twp, Morris Co Morristown Town, Morris Co |
||
| 12.91 | Morris St |  Whippany Rd |
||
| 12.42 | Lafayette St | Morris St |  |
overpass | |
| 12.40 | Lafayette St | Morris St | |
Ford Ave | |
| 12.25 | Lafayette St | Morris St | Ridgedale Ave | |
|
| 12.14 | Lafayette St | Morris St | Lackawanna Railroad | overpass | Lackawanna Railroad |
| 12.11 | Lafayette St | Morris St | |
Elm St | |
| 12.00 | Morris St | Lafayette St | |
Pine St |
| 11.90 | Morris St | Spring St | |
|
| 11.80 | Morris St |  Park St |
|
|
| 11.65 | Washington St | Park Pl |
|
Bank St |
| 11.56 | Washington St | Cattano Ave | |
Court St |
| 11.15 | Washington St | Mills St | |
Hillcrest Ave |
| 10.94 | |
Morristown Town, Morris Co Morris Twp, Morris Co |
||
| 8.11 | Mendham Rd | Morris Twp, Morris Co Mendham Twp, Morris Co |
||
| 5.83 | Mendham Rd | Pitney Rd | |
Pitney Rd |
| 5.83 | Mendham Rd | Mendham Twp, Morris Co Mendham Boro, Morris Co |
||
| 5.54 | Main St | Tempe Wick Rd |
||
| 4.83 | Main St |  Mountain Ave |
|
Hilltop Rd |
| 3.90 | Mendham Rd | Mendham Boro, Morris Co Mendham Twp, Morris Co |
||
| 2.82 | |
Mendham Twp, Morris Co Chester Twp, Morris Co |
||
| 2.82 | |
North Branch Raritan River | bridge | North Branch Raritan River |
| 0.22 | |
Chester Twp, Morris Co Chester Boro, Morris Co |
||
| 0.00 | East Main St |  North Rd |
|
Main St |
| 0.00 | Western terminus of , Chester Boro, Morris Co |
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