North Yorkshire Council has shared an update on the £82.5million Kex Gill realignment scheme.
Construction work on project is continuing, with several key elements of the scheme now underway ahead of its June reopening date.
A natural stone retaining wall is being built at the west end of the site, alongside the installation of a culvert at North Moor Road.
The culvert will channel water beneath the new road and into Hall Beck.
Backfilling work is ongoing at the large underpass visible from the old road, after which the concrete walls will be clad in natural stone.
Drainage works for the new carriageway are also in progress, while waterproofing continues on the bridge deck at Blubberhouses Bridge.
Elsewhere on the scheme, tree planting has begun and grass seeding using a wildflower mix is underway as landscaping efforts move forward.

Some temporary traffic restrictions are required as the project progresses. North Moor Road is closed for eight weeks at its junction with the A59 from 2 March.
Two-way traffic is in place at the same junction for eight weeks from that date, while two-way traffic lights are operating at Blubberhouses Bridge on the A59 until mid-May.
Church Hill is also scheduled to close at its junction with the A59 for eight weeks, currently planned for early May. In addition, overnight road closures will be needed towards the end of the scheme to allow for final surfacing works.
The realigned road remains on schedule to open in June.

Candidates announced for Ilkley/Addingham and Airedale wards at Bradford local elections
Care home's Plank Against Cancer challenge
New cake shop opens in Skipton
BID celebrates Skipton’s recent national recognition
Rotary announce 'Eco Day' at Town Hall
Burglars enter property on Skipton High Street
Changes to Skipton Bus Station to take place next place
The Stock Room in Skipton announces closure
Veteran comedian Jimmy Cricket to perform in Silsden
Skipton charity receives Easter egg donation to brighten children's holidays
North Yorkshire Police to roll out facial recognition technology
Doctors strikes will 'particularly impact Airedale A&E' bosses say
Northern trains expected to 'run normally' this Easter, passengers told
Changes to Craven bus services over Easter
Skipton Tree Top Climbing Centre opens for last ever season
Investigation begins following collision on Skipton High Street
Green Party announces election candidates for Ilkley and Addingham
Plans for second McDonalds in Keighley get go-ahead
Plans for 72 houses on edge of Silsden approved despite objections
Colour run to return to Skipton Academy Playing Field


