The A17 road from Newark-on-Trent to King's Lynn bypasses Sleaford from Holdingham Roundabout to Kirkby la Thorpe.
It ran through the town until the bypass opened in 1975.
The Holdingham roundabout connects the A17 to the A15 road from Peterborough to Scawby.
It also passed through Sleaford until 1993, when its bypass was completed.
Three roads meet at Sleaford's market place: Northgate (B1518), Southgate and Eastgate (B1517).
A one-way system set up in 1994 creates a circuit around the town centre.

The railways arrived in the 19th century.
Early proposals to bring a line to Sleaford failed, but in 1852 plans were made to build the Boston, Sleaford and Midland Counties Railway and its Act of Parliament passed in 1853.
The line from Grantham opened in 1857; Boston was connected in 1859, Bourne in 1871 and Ruskington on Great Northern and Great Eastern Joint Railway in 1882.

Sleaford is a stop on the Peterborough to Lincoln Line and the Poacher Line, from Grantham to Skegness.
Grantham, roughly 14 ³⁄₄ miles (23.7 kilometres) by road and two stops on the Poacher Line, is a major stop on the East Coast Main Line.
Trains from Grantham to London King's Cross take approximately 1 hour 15 minutes.

The River Slea through the town was converted into use as a canal for much of the 19th century.
Plans to canalise it were drawn up in 1773, but faced opposition from land-owners who feared it might affect the drainage of fens.
Plans were approved in 1791 with the support of Brownlow Bertie, 5th Duke of Ancaster and Kesteven who owned estates and quarries that he hoped would benefit.
An Act of Parliament passed in 1792, establishing the Sleaford Navigation, which opened two years later.
After falling revenues due to competition from the railways, the navigation company closed in 1878.
The river, although no longer navigable, passes under Carre Street and Southgate.
The Nine Foot Drain, also unnavigable, meets the Slea just before Southgate.
The A17 road from Newark-on-Trent to King's Lynn bypasses Sleaford from Holdingham Roundabout to Kirkby la Thorpe. It ran through the town until the bypass opened in 1975. The Holdingham roundabout connects the A17 to the A15 road from Peterborough to Scawby. It also passed through Sleaford until 1993, when its bypass was completed. Three roads meet at Sleaford's market place: Northgate (B1518), Southgate and Eastgate (B1517). A one-way system set up in 1994 creates a circuit around the town centre.
The railways arrived in the 19th century. Early proposals to bring a line to Sleaford failed, but in 1852 plans were made to build the Boston, Sleaford and Midland Counties Railway and its Act of Parliament passed in 1853. The line from Grantham opened in 1857; Boston was connected in 1859, Bourne in 1871 and Ruskington on Great Northern and Great Eastern Joint Railway in 1882.
Sleaford is a stop on the Peterborough to Lincoln Line and the Poacher Line, from Grantham to Skegness. Grantham, roughly 14 ³⁄₄ miles (23.7 kilometres) by road and two stops on the Poacher Line, is a major stop on the East Coast Main Line. Trains from Grantham to London King's Cross take approximately 1 hour 15 minutes.
The River Slea through the town was converted into use as a canal for much of the 19th century. Plans to canalise it were drawn up in 1773, but faced opposition from land-owners who feared it might affect the drainage of fens. Plans were approved in 1791 with the support of Brownlow Bertie, 5th Duke of Ancaster and Kesteven who owned estates and quarries that he hoped would benefit. An Act of Parliament passed in 1792, establishing the Sleaford Navigation, which opened two years later. After falling revenues due to competition from the railways, the navigation company closed in 1878. The river, although no longer navigable, passes under Carre Street and Southgate. The Nine Foot Drain, also unnavigable, meets the Slea just before Southgate.
Sleaford