The Louisiana House unanimously approved the state's 2017 Coastal Master Plan on Friday, paving the way for the latest five-year revision of the plan to go into effect.

The Senate approved the plan last month.

Both chambers also approved the 2018 coastal annual plan, which is both a three-year spending plan and the funding mechanism for the coming fiscal year's projects.

The annual plan calls for $644 million in spending on coastal projects in the fiscal year that begins July 1.

Approximately 30 projects will either begin or continue in the fiscal year, according to the Coastal Protection and Restoration Authority, the state agency that creates and implements the plans.

Much of the projected funding comes from expected oil royalties from drilling in the Gulf and from money from the Deepwater Horizon oil spill settlement.

The 2017 master plan is the third since 2007. Like its two predecessors, the plan passed overwhelmingly, though unlike the others, there was one dissenting vote in the Senate.

Legislators are not allowed to amend the plan; they must accept or reject the entire thing as presented.

The passage of the master plan was hailed by Gov. John Bel Edwards, who thanked legislators and said the master plan would help not just the state but the nation.

"Louisiana and the country rely heavily on our coast. It provides jobs, protection and homes to citizens and natural inhabitants alike, and we have an obligation to restore and protect it," Edwards said.

The master plan is essentially a blueprint for the next 50 years worth of projects geared toward fighting coastal loss. It presents a list of projects, some to be completed in the near term and others decades down the road. 

The latest plan lists 124 projects that are projected to build as much as 800 square miles of new land and reduce expected damage costs by as much as $8.3 billion per year in year 50.

Follow Faimon A. Roberts III on Twitter, @faimon.