Parkway Bridge Heights

George Washington Memorial Parkway

	Southbound-start from top			Northbound-start from bottom
Bridge Name	Left Lane	Right Lane	Turn/Middle Lane	Left Lane	Right Lane	Turn/Middle Lane
Ramp to Turkey Run Park	14'10"				14'11"
CIA Overpass	18' 8"	19'1"
Route 123 Overpass	13'4"	14'1"	15'9" Turn Lane	15'6"	14' 5"	13'10" Turn Lane
Route 123 Overpass				15'4"	15'4"	15'5" Acceleration Lane
F.S. Key Bridge Overpass	60' Plus	60' Plus		60' Plus	60' Plus
Bridge from Rosslyn Circle to Northbound Parkway	14' 9"	17' 3"
Route 66 Bike Path Overpass	15' 3"	14' 2"		18' 0" West Bound Spout Run	18' 0" West Bound Spout Run
Theodore Roosevelt Island Pedestrian Overpass	14' 9"	14' 9"		15' 5"	15' 3"	15' 2" Acceleration Lane
Theodore Roosevelt Bridge I-66 West				50' Plus	50' Plus
Theodore Roosevelt Bridge Route 50 Eastbound	23' Plus	23' Plus
Route 50 East	17' 6"	15' 3"
Memorial Avenue Overpass	12'1"	12'4"
Washington Boulevard Overpass	14' 7"	14' 9"
Boundary Channel Drive Under Washington Blvd.	15' 9"	16' 1"
Route 50 Bypass					12' 6"
Memorial Bridge				13' 0"	13' 0"
Mason Bridge	11' 11"	12' 11"		15' 6"	15' 10"
Rochambeau Bridge	15' 4"	16' 4"		14' 8"	18' 5"
Metrorail Bridge	23' Plus	23' Plus		23' Plus	23' Plus
CSX Railroad Bridge	13' 8"	12' 10"	14' 7" Middle Lane	12' 3"	13' 9"	14' 7" Middle Lane
Hoffermair Bridge Underpass - National Airport	16' 8"	16' 8"
Route 233 Overpass	17' 1"	15' 10"		16'10"	15' 4"
Metrorail - Airport Overpass	23' Plus	23' Plus		50' Plus	50' Plus
Smith Boulevard Overpass	15' 6"	16' 11"		16' 6"	17' 6"
Alexandria Avenue Overpass	13' 4"	10' 2"		13' 4"	10' 2"
Ft. Hunt Underpass		15' 8"			16' 1"

 

Clara Barton Parkway

	Southbound-start from top			Northbound-start from bottom
Bridge Name	Left Lane	Right Lane	Turn/Middle Lane	Left Lane	Right Lane	Turn/Middle Lane
Sycamore Island Pedestrian Bridge	14'8"				14' 11"
Glen Echo Aquaduct Bridge	20' 8"	19' 0"
Cantilever - Glen Echo					13' 3"
Cabin John Parkway East Under Clara Barton Parkway					18' 0"
Ericsson Road Overpass	15' 2"	15' 2"		14' 9"	15' 5"
American Legion Bridge Ramp from I-495 Innerloop	23' Plus	23' Plus
American Legion Brige over the CB Parkway	40 feet plus	40 feet plus		40 feet plus	40 feet plus
Carderock Bridge	14' 9"	15' 0"		15' 9"	15' 5"
Carderock Picnic Area Access Underpass		11'4"			11'4"