Middle Bridge Road Bridge
South Kingstown and Narragansett, RI
Owner: Rhode Island Department of Transportation
The old Middle Bridge carried Middle Bridge Road across the Pettaquamscutt River about one-half mile north of the Narrow River inlet in Narragansett. The old bridge was constructed in 1952, and after 50 years of service, it met all the criteria for complete replacement. The existing bridge also carried three important public utilities across the river: a 4-inch gas line, a 6-inch sewer force main and a 12-inch water main.
The new Middle Bridge is a three-span (40'- 90'- 40') structure located near the middle of the Pettaquamscutt River. The bridge cross section provides a 30-foot roadway and two, 4-foot sidewalks, all of which are supported by 39-inch deep prestressed concrete butted box beams. These box beams are spaced to provide utility bays for the utilities mentioned above. The east and west over-the-water approaches to the new bridge are earth embankments with the side slopes protected by heavy riprap.