Motorists will regain access to the full length of Brookton Highway today less than a month after the devastating blaze destroyed Buckingham Bridge.
A temporary crossing has been constructed over the Canning River, an effort that involved 4500 tonnes of fill material, 400 tonnes of rock and 250 tonnes of crushed limestone.
Armadale mayor Linton Reynolds said a return to normal traffic conditions would be a boon for road users, with only heavy vehicles still required to detour to Welshpool Road.
"The month following the bushfire has been traumatic for our community and the re-opening of Buckingham Bridge is a recovery milestone that will give many people a great lift," Mr Reynolds said.
Transport Minister Troy Buswell said the temporary crossing would stay in place until the bridge was re-built.
He congratulated the efforts of Main Roads WA and contractor Keslake Nominees in establishing the link so soon after February's devastating bushfires in the Kelmscott and Roleystone areas.
"Up to 4000 vehicles per day use this section of Brookton Highway, and care had to be taken to ensure the crossing could safely carry this traffic until a permanent replacement bridge is designed and built," Mr Buswell said.
"It's a credit to everyone involved that this temporary culvert crossing is up and running less than four weeks after Buckingham Bridge was destroyed."
About 200 tonnes of debris from the destroyed bridge also had to be removed from the site before construction began.