When the various parts of the M11 were built, listed in chronological order - or 'How the Road to Hell expanded'
|Section||Construction started||Opened to traffic|
|Redbridge to Loughton (J4 to J5)||October 1973||April 1977|
|Loughton to S Harlow (J5 to J7)||October 1974||April 1977|
|S Harlow to Bishop’s Stortford (J7 to J8)||October 1972||June 1975|
|Bishop’s Stortford to Stump Cross (J8 to J9)||May 1977||November 1979|
|Cambridge Western By-pass (J9 to J14)||Jan 1977 & July 1977||February 1980|