Bridge construction: 'It's a wet job'

Seagulls soared and the sun shone over the Mississippi River as morning commuters rumbled across the old Hastings bridge about 55 feet overhead.

Another 60 feet below, beneath the murky river's surface, four men worked inside a coffer dam -- sort of an inverted island of dryness jutting into the water and encased in a sheath of steel sheet pilings.

Read more in Minneapolis Star Tribune.