William Milnor Roberts (February 12, 1810 in Philadelphia, Pennsylvania – July 14, 1881 in Soledad, Brazil) was an American civil engineer.
 As a young civil engineer involved in the construction of the Eads Bridge, the chief engineer of Northern Pacific Railroad, America's second transcontinental railroad, and president of the American Society of Civil Engineers scarcely two decades after its founding, Roberts was one of the most prolific and prominent civil engineer of his generation in the United States.
George Gordon Meade (December 31, 1815 – November 6, 1872) was a career United States Army officer and civil engineer involved in the coastal construction of several lighthouses.
 He fought with distinction in the Second Seminole War and the Mexican–American War.
 During the American Civil War he served as a Union general, rising from command of a brigade to command of the Army of the Potomac.
 He is best known for defeating Confederate General Robert E. Lee at the Battle of Gettysburg in 1863.
Charles Pomeroy Stone (September 30, 1824 – January 24, 1887) was a career United States Army officer, civil engineer, and surveyor.
 He fought with distinction in the Mexican–American War, earning two brevet promotions for his performance in the conflict.
 After resigning and surveying for the Mexican Government, he returned to the U.S. Army to fight in the American Civil War.
Montgomery Cunningham Meigs ( ; May 3, 1816 – January 2, 1892) was a career United States Army officer and civil engineer, who served as Quartermaster General of the U.S. Army during and after the American Civil War.
 Despite his Southern birth, Meigs strongly opposed secession and remained loyal to the Union; his record as Quartermaster General was regarded as outstanding, both in effectiveness and in ethical probity, and Secretary of State William H. Seward viewed it as a key factor in Union victory.
William Buel Franklin (February 27, 1823 – March 8, 1903) was a career United States Army officer and a Union Army general in the American Civil War.
 He rose to the rank of a corps commander in the Army of the Potomac, fighting in several notable battles in the Eastern Theater of the Civil War.
 He also distinguished himself as a civil engineer before and after the war.
The Battle of Jupiter Inlet occurred on January 15, 1838, between the Seminole Indians - Seminole Negro and the United States Navy.
 This was the first of a series of battles led by the US Navy in the area, also referred to as the First Battle of Loxahatchee.
 The battle started when Lt. Levin Powell led an expedition of 200 soldiers, sailors and marines, down the east coast of Florida.
 The Navy spotted a trail alongside the Jupiter Inlet, and seventy-five men were landed to find the Seminole camp nearby.
 The camp was led by Sam Jones, Ar-pi-uck-i, the spiritual medicine and war chief of the Miccosukee and Seminole people during the war.
 The officers that advanced on the camp were outnumbered and ambushed.
 After a long fight, the US retreated with five men killed in action and about twenty others wounded.
 Ltn.
 Powell was one of those killed in battle.
The Jupiter Inlet Light is located in Jupiter, Florida, on the north side of the Jupiter Inlet.
 The site for the lighthouse was chosen in 1853.
 It is located between Cape Canaveral Light and Hillsboro Inlet Light.
 The lighthouse was designed by then Lieutenant George G. Meade of the Bureau of Topographical Engineers.
 Meade's design was subsequently modified by Lieutenant William Raynolds.
 The Jupiter Inlet silted shut in 1854, forcing all building supplies to be shipped in light boats down the Indian River.
 Work was interrupted from 1856 to 1858 by the Third Seminole War.
 The lighthouse was completed under the supervision of Captain Edward A. Yorke in 1860 at a cost of more than $60,000.
Gustavus Woodson Smith (November 30, 1821 – June 24, 1896), more commonly known as G.W. Smith, was a career United States Army officer who fought in the Mexican-American War, a civil engineer, and a major general in the Confederate States Army during the American Civil War.
 He briefly commanded the Army of Northern Virginia from May 31 until June 1, 1862, following the wounding of General Joseph E. Johnston at the Battle of Seven Pines, and before General Robert E. Lee took command.
 Smith later served as Interim Confederate Secretary of War and in the Georgia state militia.
Joseph King Fenno Mansfield (December 22, 1803 – September 18, 1862) was a career United States Army officer, civil engineer, and a Union general in the American Civil War, mortally wounded at the Battle of Antietam.
Andrew Atkinson Humphreys (November 2, 1810December 27, 1883), was a career United States Army officer, civil engineer, and a Union General in the American Civil War.
 He served in senior positions in the Army of the Potomac, including division command, chief of staff, and corps command, and was Chief Engineer of the U.S. Army.

Question: Who was a career United States Army officer and civil engineer involved in the coastal construction of several lighthouses, one being located in Jupiter, Florida, on the north side of the Jupiter Inlet that had a costof more than $60,000? 
Answer: George Gordon Meade