 Route 99 | ||||
|---|---|---|---|---|
 Route 99 highlighted in red | ||||
| Route information | ||||
| Maintained by MassDOT | ||||
| Length | 6.67 mi[1] (10.73 km) | |||
| Major junctions | ||||
| South end | North Washington Street and Chelsea Street in Boston | |||
| North end |  US 1 in Saugus | |||
| Location | ||||
| Country | United States | |||
| State | Massachusetts | |||
| Counties | Suffolk, Middlesex, Essex | |||
| Highway system | ||||
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Route 99 is a 6.67-mile-long (10.73 km) north–south state highway in metropolitan Boston, leading from the Boston neighborhood of Charlestown through the northern suburbs of Everett, Malden, and Melrose, and terminating in Saugus at U.S. Route 1 (US 1).