The South Australian Government is calling for expressions of interest for $28 million package of Adelaide road projects.
A $3.5 million upgrade to Blackwood roundabout is among the more than 20 road infrastructure projects included in the works in the Adelaide metropolitan area.
Other works include a $4.4 million Bridge Road/Maxwell Road intersection upgrade, a $4.2 million Payneham Road/O.G. Road intersection upgrade and a $1.3 million Regency Road/Churchill Road intersection upgrade.
The program of works also includes upgrades to the Main North Road/Dalkeith Road intersection and the intersections of Fitzroy Terrace with Prospect Road and Main North Road.
A number of other upgrade projects on metropolitan roads will also be completed as part of the works.
The South Australian Government said a similar package of regional road works is expected to be announced in coming weeks.
The expressions of interest will be called on the Tenders SA website with the package of works scheduled to begin in December.