UPDATE: The road is now clear and has reopened.
POLICE and county show organisers are warning motorists to avoid the B4329 after a two-vehicle crash has blocked the road between Cross Lane and Poyston Cross.
Police are on scene directing traffic.
For updates see our live travel and traffic report.
Traffic was already heavy due to today being the final day of the Pembrokeshire County Show and the road closure will affect motorists travelling between Haverfordwest and Eglwyswrw on the mountain road.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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