Major delays are expected likely, with roadworks in place on the A49 in Hereford following a gas leak.
The roadworks are in place on the A49 (Ross Road), between the Broadleys pub and Bullingham Lane.
Cadent Gas are carrying out emergency work.
According to the One Network website, roadworks could be in place until the end of the week, so disruption is likely, particularly at peak times.
Motorists are advised to plan ahead, and use an alternative route if possible.