Question: how is Tinsley Viaduct and A631 road connected?

Context articles: A631 road
Tinsley Viaduct
North Willingham
Tinsley railway station
Hemswell Cliff
Tinsley Motive Power Depot
Aisby, West Lindsey
MacRitchie Viaduct
West Rasen
Harwell, Nottinghamshire

The A631 is a road running from Sheffield, South Yorkshire to Louth, Lincolnshire in England.
 It passes through the counties of South Yorkshire, Nottinghamshire and Lincolnshire.
 The road has many towns on its route including Rotherham, Maltby, Gainsborough and Market Rasen.
 It is mostly single road throughout its length but has some stretches of dual carriageway as well.
 The road is approximately 65 mi long.
Tinsley Viaduct is a two-tier road bridge in Sheffield, England; the first of its kind in the United Kingdom.
 It carries the M1 and the A631 1,033 m over the Don Valley, from Tinsley to Wincobank, also crossing the Sheffield Canal, the Midland Main Line and the former South Yorkshire Railway line from Tinsley Junction to Rotherham Central.
 The Supertram route to Meadowhall runs below part of the viaduct on the trackbed of the South Yorkshire Railway line to Barnsley.
North Willingham is a village and civil parish in the West Lindsey district of Lincolnshire, England.
 The population of the civil parish (including Sixhills) was 181 at the 2011 census.
 It is situated 3.5 mi east from the town of Market Rasen on the A631 road between Market Rasen and Louth.
Tinsley railway station was a railway station in Sheffield, South Yorkshire, England, opened in March 1869.
 This station was designed by the company architect John Holloway Sanders.
 The station served the growing community of Tinsley and the workers at the nearby steelworks which had moved to or had been founded in the lower Don Valley following major changes in manufacturing methods in the mid - late 19th century.
 The station, opened by the South Yorkshire Railway, was built on the line between Sheffield Victoria and Barnsley and became a junction station with the opening of the line from Tinsley Junction (later Tinsley South Junction) to the original Rotherham station by the Manchester, Sheffield and Lincolnshire Railway.
 The station was located by the main Sheffield to Rotherham road in Tinsley, now on the Sheffield side of M1, Junction 34 in Tinsley.
Hemswell Cliff is a village and civil parish in the West Lindsey district of Lincolnshire, England.
 It is situated on the A631 road between Caenby Corner and Gainsborough and on the Lincoln Cliff escarpment.
 According to the 2001 Census it had a population of 683.
Tinsley Motive Power Depot, latterly Tinsley Traction Maintenance Depot (TMD), was a railway depot in Tinsley, South Yorkshire, near Sheffield.
 Access by road was from Brinsworth, near Rotherham.
 The depot was situated on the freight line between Treeton Junction and the A631 Shepcote Lane.
Aisby is a hamlet in the civil parish of Corringham, in the West Lindsey district of Lincolnshire, England.
 It is situated just over 1 mi north from the A631 road and Corringham, 4 mi north-east from Gainsborough, and 5 mi south-east from Kirton in Lindsey.
MacRitchie Viaduct (sometimes also called Lornie Viaduct) is a viaduct in Thomson, Singapore that was built on top of Lornie Road and Thomson Road, with its extension also above Braddell Road.
 The viaduct is built to allow residents living in the Eastern, Central and Western part of Singapore a high-speed access between the east and the west for the residents who wants to travel from the east to the west or vice versa.
 The extension of the viaduct was opened on 24 August 2008, and is the first flyover to be constructed over an existing flyover, the Marymount Flyover.
 The extension is also part of the Outer Ring Road System, allowing motorists travelling between Queensway and Bartley Road to bypass the city area.
West Rasen is a village and civil parish in the West Lindsey district of Lincolnshire, England.
 It is situated on the A631 road, and approximately 3 mi west from Market Rasen.
Harwell is a hamlet in the civil parish of Everton, in Bassetlaw district, northern Nottinghamshire, England.
 It is located off the A631 road, less than a mile to the northwest of Everton and three miles northeast of Bawtry.
 Although only a small settlement, historically Harwell had a separate manor.
 The hamlet had a population of 112 people in the mid 19th century and the Corporation of Newark were lords of the manor at that time.
 Today, the main feature of Harwell is the Grade II listed Pear Tree House and the Barrow Hills woodland, immediately to the northwest.