Rio de La Plata Flood Damage Reduction Project

SPONSOR: Puerto Rico Department of Natural and Environmental Resources (DNER).

AUTHORIZATION: Section 101(a)(19) of the Water Resources Development Act of 1990.


FUNDING: American Recovery and Reinvestment Act of 2009 (ARRA) funds were used to construct the project area referenced as Contract 1A. Regular cost-shared construction funds were used to construct the Dorado Bridge Channel & Scour Protection Contract. The remaining project segments were funded under the Bipartisan Budget Act of 2018 to address damages from Hurricane Maria.

LOCATION: The Río de la Plata basin is located about 11 miles west of San Juan and drains approximately 240 square miles.

DESCRIPTION: Heavy rainfall combined with the steep headwater slopes causes frequent flooding in the towns of Dorado, Toa Baja, and Toa Alta. Project features consist of 4.8 miles of channel improvements, 6.22 miles of levees, the replacement of 2 bridges, recreation facilities, and mitigation for the loss of environmental habitats.

BENEFITS: When completed, the project will provide over $12 million in annual economic benefits and 100-year flood protection downstream of PR Highway 2, including the towns of Dorado, Toa Baja, Toa Alta, Levittown, and the communities of Mameyal, Ingenio, and Campanilla.

Dorado Bridge Channel Widening & Scour Protection in the amount of $17,287,546 was awarded on September 2017, includes Construction of 0.40 miles of channel improvements, 0.41 mile of earthen levee, and bridge scour protection using articulated concrete block mats.

Articulated Concrete Block Mat and Toe Key contract 500 feet of channel scour protection and toe key revetment.

Supplemental Contract 1 Construction of 4 concrete culverts, 1.58 miles of river channel improvements, and construction of 3.14 miles earthen levees.

Supplemental Contract 2 Puerto Rico Highway-2 bridge replacement and 0.45 miles of channel improvements.

Supplemental Contract 3 Construction of 1.31 miles of earthen levees and 1.43 miles of channel improvements. Relocation of the super aqueduct.

Contract 1A in the amount of $23,700,000 (American Recovery and Reinvestment Act funds) was physically completed October 2015