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Bridges & Structures

Appendix B - Highways in the Coastal Environment: Second Edition

Table B.2. Atlantic and Gulf coastal county mileage in 100-year floodplains and v-zones.
State County (100-year flood zone miles; v-zone miles)
Alabama Baldwin (341,49) Mobile (419,25)
Connecticut Fairfield (324: 11), Middlesex (133: 3), New Haven (267; 10), New London (162; 10)
Delaware Kent (150; 1), New Castle (154; 0), Sussex (459; 11)
Florida Bay (309; 5), Brevard (735; 3), Broward (4,688; 7). Charlotte (1,313; 19), Collier (859; 17), Dixie (967; 106), Duval (305; 14), Escambia (243; 16), Flagler (238; 0), Franklin (1,201; 63), Gulf (665; 15), Hernando (201; 45), Hillsborough (1,249; 17), Indian River (647; 2), Lee (1,881; 37), Levy (1,104; 118), Manatee (525; 16) Martin (139; 2), Miami-Dade (4,803; 23), Monroe (965; 94). Nassau (261; 8) Okaloosa (133; 7), Palm Beach (1,167; 22), Pasco (888; 18), Pinellas (1,253; 53), St. Lucie (203; 7), Santa Rosa (241; 8), Sarasota (667; 12), St. Johns (353; 0) Wakulla (524; 70), Walton (191; 3), Volusia (875; 0)
Georgia Bryan (311; 13), Camden (349; 11), Chatham (710; 48), Glynn (710; 23) . Liberty (294; 29) McIntosh (263; 43)
Louisiana Cameron (944), Iberia (327), Jefferson (1,177), La Fourche (878), Orleans (1,222), Plaqueminas (387), Saint Bernard (139), Saint Mary (753), Saint Tammany (1,090), Terrabonne (531), Vermillion (994),
Maine Cumberland (123; 10), Hancock (145; 29), Penobscot (186; 0), Sagadahoc (40; 1), Waldo (65; 4), Washington (121; 15), York (134; 4)
Maryland Ann Arundel (127; 2), Baltimore (156; 0), Baltimore City (57; 4), Calvert (18; 1), Cecil (57; 0), Dorchester (535; 0), Harford (78; 0), Prince Georges (90; 0), Queen Anne (85; 3), Saint Mary's (296; 0), Somerset (63; 3), Talbot (106; 2), Wicomico (88; 1), Worcester (353; 12)
Massachusetts Barnstable (350; 59), Bristol (189; 27), Dukes (64; 11), Essex (222; 10), Middlesex (224; 0), Nantucket (40; 9), Norfolk (180; 3), Plymouth (362; 48)
Mississippi Hancock (409; 30), Harrison (340, 22), Jackson (397; 22)
New Hampshire Rockingham (169; 3)
New Jersey Atlantic (1,053; 10), Bergen (430; 0), Burlington (895; 0), Cape May (722; 30), Cumberland (468; 0) Monmouth (589; 22), Ocean (1,313; 33), Salem (396; 0),
New York Nassau (330; 20), New York (475; 23), Suffolk (701; 152), Westchester (166; 4)
North Carolina Beaufort (649; 0), Brunswick (743; 69), Camden (132; 0) Carteret (698; 15), Currituck (242; 2), Dare (842; 20), Hyde (848; 7), New Hanover (160; 1), Onslow (161; 7), Pamlico (370; 2), Pender (409; 1)
Rhode Island Kent (99; 17), Newport (79; 28), Providence (86; 7), Washington (158: 29)
South Carolina Beaufort (1,139; 12), Berkeley (327; 3), Charleston (1,523; 157), Colleton (570; 13), Georgetown (509; 21), Horry (422; 17), Jasper (352; 0).
Texas Aransas (182), Brazoria (1,135), Calhoun (361), Cameron (840), Chambers (610), Galveston (884), Jackson (323), Jefferson, (742), Kenedy (23; 23), Kleberg (292), Matagardo (520), Neuces (435), San Patrico (208), Willacy (107)
Virginia Accomack (399; 27), Gloucester (133; 9), Hampton City (159; 8), Lancaster (56; 2), Matthews (189; 7), Middlesex (30; 2), Newport News City (32; 1), Norfolk City (115; 2), Northampton (69; 10), Northumberland (29; 1), Portsmouth City (59; 0), Prince William (41; 0), Poquoson City (51; 1), Richmond (13; 0), Virginia Beach City (233; 16), Westermoreland (20; 1), York (34; 1)
Table B.3. Pacific and Great Lake States coastal county mileage in 100-year floodplains.
State County (100 - year flood zone miles)
California Alameda (156), Contra Costa (327), Del Norte (80), Humboldt (1,855) Los Angeles (879), Marin (356), Mendocino (270), Monterey (503), Napa (89), Orange (1,105), San Mateo (129), San Luis Obispo (851), Santa Barbara (264) , Santa Cruz (97), Sonoma (146), Ventura (387)
Illinois Cook (550), Lake (214)
Michigan Alpena (8), Arenac (98), Bay (233), Berrien (61), Chippewa (101), Delta (88), Huron (44), Iosco (20), Keweenaw (10), Mackinac (36), Macomb (149), Manistee (21), Menominee (33), Monroe (167), Muskegon (27), St. Clair (94), Wayne (252)
Minnesota St. Louis (178)
Ohio Cuyahoga (86), Erie (66), Lake (50), Ottawa (178)
Oregon Clastop (137), Coos (268), Douglas (294), Lane (660), Lincoln (190), Tillamook (146)
Pennsylvania Erie (58)
Washington Clallam (164), Grays Harbor (404) Jefferson (107), Pacific (125), San Juan (93), Whatcom (221)
Wisconsin Bayfield (65), Brown (147), Manitowoc (45), Marinette (133), Milwaukee (76), Ozaukee (65), Racine (57)
Updated: 06/27/2017
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000