|Maintained by VTrans and NHDOT|
|Length||1.070 mi (1.722 km)|
|West end||I-91 / US 5 near Norwich, VT|
|East end||NH 10 in Hanover, NH|
|State highways in Vermont|
Route 10A is a 1.070-mile-long (1.722 km) east-west highway connecting the towns of Norwich, Vermont and Hanover, New Hampshire. The route exists as Vermont Route 10A and New Hampshire Route 10A, with each designation carrying about half of the route's length. The route begins in Norwich at an interchange with Interstate 91 and U.S. Route 5 and runs east, crossing the state line and continuing into downtown Hanover, where it ends at New Hampshire Route 10.
VT 10A begins at the exit 13 interchange where I-91 and US 5 meet south of the town of Norwich. From this interchange, it heads east towards the Connecticut River for 0.52 miles (0.84 km). It crosses the Ledyard Bridge over the river and enters Hanover, New Hampshire where it becomes NH 10A (West Wheelock Street). NH 10A continues east for 0.54 miles (0.87 km) before ending at NH 10 in downtown Hanover near Dartmouth College.
NH 10A is the shortest state highway in New Hampshire.
|Vermont||Windsor||Norwich||0.000||0.000||I-91 south / US 5 – Norwich, Wilder, White River Junction||Exit 13 on I-91|
|0.210||0.338||I-91 north – Thetford, St. Johnsbury|
Vermont–New Hampshire state line
|New Hampshire||Grafton||Hanover||0.548||0.882||NH 10 (Main Street)|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Traffic Research Unit (May 2013). "2012 (Route Log) AADTs for State Highways" (PDF). Policy, Planning and Intermodal Development Division, Vermont Agency of Transportation. Retrieved March 10, 2015.
- Bureau of Planning & Community Assistance (February 20, 2015). "NH Public Roads". Concord, New Hampshire: New Hampshire Department of Transportation. Retrieved April 7, 2015.