Indiana State Road 51
| Adam Benjamin Highway | ||||
SR 51 highlighted in red | ||||
| Route information | ||||
| Maintained by INDOT | ||||
| Length | 9.557 mi (15.381 km) | |||
| Major junctions | ||||
| South end | US 30 east of Merrillville | |||
| US 6 in Hobart I-80 / I-94 / US 6 in Lake Station | ||||
| North end | US 20 in Gary | |||
| Location | ||||
| Country | United States | |||
| State | Indiana | |||
| Counties | Lake | |||
| Highway system | ||||
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State Road 51 in the U.S. state of Indiana is a north–south route on the state highway system in northwest Indiana. It consists of a route 9.56 miles (15.39 km) long from a point on U.S. Route 30 (Lincoln Highway) 4 miles (6.4 km) east of Merrillville and 8 miles (13 km) west of Valparaiso, north to U.S. Route 20 in Gary. Immediately north of US 30, the highway is signed as the Adam Benjamin Highway.