commercial vehicles away from the Toowoomba central business district Reduction in vehicle operating costs by ensuring a maximum slope gradient of 6.5% across the Toowoomba Range, a significant decrease from the existing range crossing which is up to 10% Accommodate regional growth and increase productivity on the Darling Downs Safer and less congested route than the existing range crossing Route description The Bypass commences just west of Postman Ridge Road on the Warrego Highway. It deviates north-west passing up the range at a maximum gradient of 6%. After travelling for approximately 15 km the road passes over an 800-metre viaduct and then through a 30-metre cutting, passing under the New England Highway at the top of the range. From there it travels in a general South west direction reconnecting with the Warrego Highway at Charlton and ultimately connecting with Gore Highway at Athol. The bypass features 24 bridges, six interchanges and nine creek crossing. The posted speed limit is 100 kilometres per hour for its entirety except between the western entrance to the Warrego Highway and Mort Street where it is 90. The speed limit is enforced by point to point speed cameras. Tolls The Toowoomba Bypass is a Toll road only between Mort Street and Toowoomba Connection Road , with one toll point located just east of the Mort Street Interchange. It is a free-flow system requiring an electronic toll tag (e-TAG). It is mandatory for heavy vehicles to use the toll road unless they have a destination in Toowoomba or Warwick. Even though the bypass is tolled, it is owned and operated by the Department of Transport and Main Roads (TMR). Transurban Queensland provides tolling service on the bypass on behalf of TMR. Exits References External links Nexus Infrastructure - Toowoomba Second Range Crossing Project Homepage TMR - Toowoomba Bypass Transport in Toowoomba Lockyer Valley Region Toll roads in Australia