There are signs of steady and continuous progress, but transportation officials admit many challenges still exist.  

Energy developer Anbaric in May signed a $650-million agreement with an affiliate of Commercial Development Co. to develop a renewable-energy center at a former coal plant in Somerset, Mass.

Beset with delays, rising costs and regulatory scrutiny, Honolulu’s light rail project faces another challenge—bird excrement.

The International Federation of Consulting Engineers and the International Tunneling and Underground Space Association (ITA-AITES) launched a new set of contract documents specifically tailored to the challenges of underground works that involve geologic uncertainty, including tunneling and foundations. 

Transportation infrastructure will need technology to help meet the needs of a growing urban population, and political will to fuel major projects and investor confidence.