BOSTON-The state considers legal action against Bechtel/Parsons Brinckerhoff, the Big Dig's lead contractor. The project's budget ballooned to $14.6 billion and a report indicates that the contractor cost the state $65 million in cost overruns.

MANSFIELD, MA-A public pension fund sells the 190,000-sf Mansfield Corporate Center to HRPT Properties Trust. The deal comes on the heels of HRPT's purchase of the Campus at Cabot Business Park.

FRANKLIN, MA-In a deal that the broker involved says demonstrates the strength of multifamily market in the Route 495 area, Dunphy Management buys Union Square Apartments for $7 million from Sawyer Realty Holdings LLC.

BOSTON-Two companies sign leases that fill up 45,387 sf of space at 75 State St. Harbor Capital Management is leasing 24,359 sf while Parthenon Capital is leasing 21,028 sf.

MILFORD, MA-Thermo Electron Corp. leases 103,000 sf at 450 Fortune Blvd. The new facility, which will consolidate the operations of four former sites, will be used as a manufacturing center for the company's sample preparation products used in life sciences research.

WALTHAM, MA-Straumann USA decides to establish its US headquarters in the state. The medical devices company was considering a number of other locations across the country, but was attracted by the state's tax incentives.

BOSTON-Congress Group Ventures, along with CB Richard Ellis/Whittier Partners, the property's new leasing agent, unleashes an aggressive marketing campaign to get its 600,000-sf tower at 33 Arch St. pre-leased. The building is scheduled to open early next year and has yet to nail down tenants.

WESTFORD, MA-sentitO Networks relocates and expands its sales and development office from Chelmsford to 238 Littleton Rd. in the Westford Regency Park. The Rockville, MD-based company signed a two-year lease for 8,188 sf of space.