What is Chesapeake Bay Bridge–Tunnel?
{{Infobox bridge | bridge_name = Chesapeake Bay Bridge–Tunnel | image = 2017-07-12 11 23 10 View south along U.S. Route 13 (Chesapeake Bay Bridge-Tunnel) crossing the North Channel of the Chesapeake Bay in Northampton County, Virginia.jpg |image_size=300px | caption = Coming down from the high-level portion near the north end. | official_name = Lucius J. Kellam Jr. Bridge–Tunnel | also_known_as = | carries = 4 lanes (4 on bridges, 2 in tunnels) of {{jct|state=VA|US|13}} | crosses = [[Chesapeake Bay]] | locale = [[Virginia Beach, Virginia|Virginia Beach]] and [[Norfolk, Virginia|Norfolk]], [[Chesapeake, Virginia|Chesapeake]], [[Portsmouth, Virginia|Portsmouth]] to [[Cape Charles (headland)|Cape Charles]], [[Virginia]], [[United States|U.S.]] | maint = [[Chesapeake Bay Bridge and Tunnel Commission]] | id = | design = [[Fixed link]]: low-level [[trestle]], single-tube [[tunnel]]s, artificial islands, [[truss bridge]]s, high-level [[trestle]] | mainspan = | length = {{convert|17.6|mi|km}}<ref name=facts>{{cite web |title=Chesapeake Bay Bridge–Tunnel Facts |publisher=Chesapeake Bay Bridge and Tunnel Commission |url=http://www.cbbt.com/facts.html |access-date=November 23, 2006 |archive-date=April 28, 2015 |archive-url=https://web.archive.org/web/20150428072417/http://www.cbbt.com/facts.html |url-status=dead }}</ref> | width = | clearance = | below = {{convert|75|ft|m|1}} (North Channel)<br />{{convert|40|ft|m|1}} (Fisherman Inlet) | traffic = | open = {{start date and age|1964|Apr|15|mf=yes}} (northbound)<br />{{start date and age|1999|Apr|19|mf=yes}} (southbound) | closed = | toll = Cars $18 (each direction, peak, round trip discount available) [[E-ZPass]] | map_cue = | map_image = | map_text = | map_width = | coordinates = {{coord|37.029966|-76.085815|display=inline}} }} The '''Chesapeake Bay Bridge–Tunnel''' ('''CBBT''') is a combination [[bridge]] and [[tunnel]] in the [[U.S. state]] of [[Virginia]]. It is {{convert|23|mi}} long. It crosses the mouth of the [[Chesapeake Bay]]. It connects the [[Delmarva Peninsula]]