Chairman of Gloucestershire Local Enterprise Partnership's Logistics Sector Group, Mark Ryan said the benefits that improving the junction would bring to the county as a whole is "far in excess" of the cost.

BBC: Motorway bridge

Analysts say that to avoid too much exposure to any one driver of value, stick with a diversified partnership like Enterprise Products Partners (EPD), Sunoco Logistics (SXL) or Plains All American (PAA).

FORBES: Pump Up Yields In Master Limited Partnerships

In the early 1990s, manufacturers began to see the value of single enterprise-wide resource planning solutions that integrated manufacturing, logistics, distribution, inventory, shipping and accounting.

FORBES: Product Lifecycle Management: A New Path To Shareholder Value?