Project completed May, 2012
Location: Alton, NH
Owner: Town of Alton, NH
Engineer: Dubois and King
Solution: With the new precast arch structure there is no need for weight posting any longer.
Issue: Potential that the existing bridge would be a choke point along the brook and result in bridge or roadway failure
Solution: The new bridge using a natural stone bottom and enlarged interior dimensions should provide for a safe buffer in the event of extreme water flows.
Issue: A historic dam is adjacent to the bridge site which must not be disturbed.
Solution: The crews worked diligently to limit work near the dam and in the end there was no disturbance made to the dam.
Issue: Aesthetics were extremely important to the abutters.
Solution: The new precast bridge has a synthesized ashlar stone finish to help it to blend with the rural environment.