Mile Markers (MM) is a relative location of a site in reference to the number
of miles north of Key West. The business center of unincorporated Key
Largo is at about MM 100; therefore, about 100 miles northeast of Key
West. The Florida DOT tries to maintain small rectangular green with
white number mile marker signs every mile on both sides of the highway.
Generally except Marathon, addresses along the highway is the MM
expressed as a four, five or six digit number. For example, a business with
an address of 100511 Overseas Highway would located at about MM
100.5. If the extreme right digit (least significant) number is an even
number, it is on the west or Bay/Gulf side. If an odd number it is on the
east of ocean side.
Subtracting two MM's gives the approximate number of miles between two
If the MM's are getting smaller, one is traveling south or southwest. These
are listed from north to south. Note: the farther south in the Keys one is,
the more east and west the highway runs.
I assume this practice began with Henry Flagler who numbered every mile
of railroad beginning at Jacksonville and ending at Key West. They were
white and black concrete Mile Post signs along the railroad track and on
the printed timetables.
This list of MM's are approximate as I have recorded them.
Items listed in italics are historical locations and may not still physically
|127.5 = Florida City - Junction with Fla. Turnpike and U.S. 1..
126.5 = Junction U.S. 1 with CR-905 to/from Card Sound Bridge and Ocean Reef Club, Oceanside. Also an alternate
route, $1.00 bridge toll, if southbound.
126.0 = End/Begin two-lane "18 Mile Stretch." If southbound, please drive carefully.
123.5 = Florida Sand and Gravel site, Oceanside
123.0 = Dade Correctional Institution, gulfside
118.0 to 121.0 = Four-lane passing zone
119.5 = Dirt road turn-off, gulfside
116.3 = C-111 Aerojet canal bridge
114.1 = to 116.0 Four-lane passing area.
114.0 = South Dade Marina & boat storage, Oceanside
112.5 = MONROE COUNTY LINE - Leave Dade County if southbound.
110.8 = FKAA Water Pump Station, Oceanside. Little Black Water Sound Boat Ramp, gulfside
109.3 = Osprey bird nest, Oceanside
108.0 = Osprey nest, Oceanside.
107.2 = Jewfish Creek drawbridge. Exit/enter Key Largo. Begin "18-Mile Stretch." If northbound, please drive carefully.
106.6 = Lake Surprise
106.5 = Card Sound Bridge turnoff to/from Ocean Reef via CR 905 Oceanside. Also an alternate route, $1.00 bridge
toll, northbound to Homestead. If taking CR905, the following MM's apply and are labeled "C". At C-5 soundside is
the solid waste transfer facility. At C-7 oceanside is the former Carysfort Campground. At C-7.5 soundside was the
former Nike missile launch site. At C-8.5 oceanside is the remains of the Nike missile radar site. At C-9.25 is a three
way stop. Straight goes to the Anglers and Ocean Reef Clubs gated communities. Left goes across the Cardsound
toll bridge to Homestead. At C-11 to the left is the Angler's Club and straight ahead is the Ocean Reef Club. Now
back to MM's.
106.0 = Key Largo Chamber of Commerce, gulfside; FKEC Power sub-station oceanside
105.9 = County Animal shelter, oceanside
105.6 The location of the railroad depot and the center of the community of Key Largo from about 1910 to 1940. The
was in the highway median. The community was gulfside.
105.5 = St. Justin Catholic Church, gulfside
105.4 = Winn-Dixie Shopping Center, gulfside
105.3 = Stillwright Point community entrance, gulfside
105.0 = Cracked Conch Restaurant, oceanside
104.8 = Key Largo Elem. School, oceanside
104.5 = Taylor Creek Village, oceanside; Tamarind Park, gulfside
104.1 = Caribbean Club, gulfside. The set for the 1948 movie Key Largo was modeled for this location.
104.0 = Italian Fisherman Restaurant, gulfside
103.5 = The 1920s Key Largo Rock Castle, End of Oceana Drive, Oceanside.
103.4 = Marvin Adams Waterway Bridge (The Cut), a canal that connects Atlantic to Florida Bay
103.8 = Central (Pink) Plaza Shop Center, gulfside
102.8 = John Pennekamp State Park entrance, oceanside
102.0 = Telephone microwave towers, gulfside
101.5 = Tarpon Basin Road, Key Largo Library, Tradewinds Shopping center, oceanside
101.2 = Hibiscus Park, Oceanside. The was the center of the 1880s community of Newport.
99.8 = Key Largo Post Office- ZIP 33037, gulfside
99.5 = Waldorf Plaza, oceanside.
98.0 = Landings of Largo, gulfside; Moose Lodge oceanside; Everglades Park Ranger Station, gulfside.
1st Baptist Church, oceanside; Shell World (center road); Rock Harbor Club, gulfside.
95 to 100 = This was the early community of Rock Harbor. A small railroad depot was also here.
97.0 = Westin Hotel, gulfside
96.0 = Silver Shores community, oceanside; Winken Blinkin and Nod Estates, oceanside. Buttonwood Bay gulfside
95.3 = Key Largo Ocean Resorts, oceanside. Key Largo Prof. Center., gulfside.
95.2 = Florida Keys National Marine Sanctuary building.
94.8 = Seaside community, oceanside. The 1900s Thompson line packing house was in this area.
94.0 = Red Cross Center, gulfside; Glander Boats oceanside, Sunset Hammock, gulfside.
93.8 = Wild Bird Center, gulfside
93.1 = Hammer Point community, WFKZ Radio tower and offices, gulfside.
92.9 = Jewish Center, oceanside
92.8 = Burton Memorial United Methodist Church, oceanside
92.6 = Burton Drive, Harry Harris Park oceanside. The early community of Planter included the park area, but the
community center was about 1,000 feet south.
92.2 BPOE Lodge, Bank of America, gulfside; Driftwood Trailer Park, oceanside
91.9 Old Tavernier Post office; Old Settlers Park, oceanside Tavernier Hotel, oceanside. This was the center of the
early community of Tavernier. Its depot was in the median just south of the post office.
91.8 = Reporter Newspaper; FKEC Power Station, Oceanside; FKAA, gulfside
91.3 = Tavernier Town Shopping Center, Mariners Hospital, Post Office - ZIP 33070, gulfside
91.0 = Tavernier Creek Bridge; enter Islamorada; Tavernier Creek Marina, Plantation Marina, gulfside
90.8 = Turek Building, gulfside
90.1 = Plantation Key Colony community entrance, gulfside; Immanuel Lutheran Church, oceanside. A large Indian
mound existed in the center of the subdivision.
90.05 = End 4-lane highway if going south.
90.0 = Coral Isles Church; Coral Shores High School, Oceanside; Plantation Key Elementary School
89.5 = San Pedro Catholic Church, gulfside
88.5 = Plantation Key Government Center, Sheriff, Courthouse, Building/Zoning/Tax Collector/ Assessor;
Convalescent and Children's Center; Old Mariner's Hospital, gulfside
88.0 = Futura Yacht Club, gulfside; Plaza 88; Plantation Key Professional Building, oceanside
87.5 = St. James Fisherman Episcopal Church, Executive Bay Club, Gulfside
87.0 = Founders Park (Plantation Yacht Harbor), gulfside
86.8 = Rainbarrel, gulfside,these complexes hosts arts and craft shows, usually several throughout the year.
Photo taken at Founders Park Dog Park.
HISTORICAL PRESERVATION SOCIETY OF THE UPPER KEYS
Jerry Wilkinson · Key Largo, FL
The Historical Preservation Society of the Upper Keys meet at
Key Largo Library Community Room, second Monday of each
month. Most programs of a historical nature.
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Information about the Florida Keys and Key West