Four teams are competing for a £50M roads deal in Scotland.
Aecom made the shortlist for the contract to design the project to dual the A96 between Hardmuir and Fochabers.
An Amey-Arup joint venture is also in the running for the 47km scheme.
CH2M and Fairhurst are working together on a third tender for the government-led project.
The shortlist is completed by Mott MacDonald and Grontmij, with a contract award expected before the summer.
Scottish infrastructure secretary Keith Brown said: “The breadth of interest from the industry is testament to the importance of this major infrastructure project and again underlines the significant investment that this government is making in the transport network across Scotland with the M8M73M74 Motorway Improvements Project and the Aberdeen bypass on the ground, and the Forth Replacement Crossing due for completion later this year.
“This contract will provide the successful bidders with steady work for years to come and many more opportunities for small and medium enterprises through subcontracted work, so it will be a significant boost for the local and national economy.”