UPDATE: The collision scene was re-opened just before 8.30pm, North Yorkshire Police say.
"More information and an appeal for witnesses will be released as soon as possible," a spokesperson said. "Thank you for your support."
A serious collision on the A170 at Sinnington, in Ryedale, is causing major disruption this afternoon.
The collision happened at about 2.15pm.
Police say local diversions have been put in place while ambulance, air ambulance and police work at the scene.
The closures include Sinnington crossroads, the junction with Main Street and Marton Road, and the A170 junction to Wrelton Cliff Road at Wrelton.
Police say motorists should avoid the area until further notice.
Witnesses, along with drivers and riders equipped with video cameras, are urged to make a report via the North Yorkshire Police website or by calling 101.
Please quote reference NYP-11092022-0304 when providing details.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here