For the area's other bidders, the NFL's Minnesota Vikings, a strong stadium proposal is less of a worry.
The Department for Transport (DfT) will start vetting bidders next month, with a view to restoring the line to the private sector in March 2015.
Doha was on Tuesday awarded the 2019 championships by the IAAF ahead of rival bidders Eugene and Barcelona, marking another significant step in the nation's sporting portfolio, which has the controversial 2022 World Cup as its centrepiece.
As well as the alliance of Amec, Washington and Areva, the other bidders are a consortium made up of Serco, US contractor Bechtel and BWXT Nuclear Services UK Toshibaandnd Fluor; and CH2M Hill.
Bidders for those contracts, currently owned by National Express, are now expected to demand compensation.
Two failed bidders for the capital's local TV licence – London8 which was headed by ex-Channel 4 chairman Luke Johnson, and Channel 6 which was backed by organisations including Trinity Mirror – threatened legal action if Ofcom approved the change.
For the bidders, "we have to be on our toes and be ready to address any issues that come up," Warren Smith of Sacramento said.
State-owned gas giant Gazprom was one of the leading bidders for Greek natural gas infrastructure assets in 2013 in a privatisation deal that was eventually shelved.
Why don't bidders look at partnerships with smaller entities – co-ops and other social enterprises – which would really add value to a more conventional approach.
A bidders' day in July attracted interest from firms in Europe and the far east.
In Tehran's luxurious Grand Azadi hotel, a row of women dressed in black with red headscarves hold the lines open to bidders as the auctioneer tries to conjure up increasingly large sums with his hammer.
