File:Park Street motorway upgrade.png

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Description:	How Park Street Roundabout could have looked if an alternative route for the M25 was chosen in the 1970s. One of the options was for the motorway to closely follow the A405 and A6 between Park Street Roundabout and Bignells Corner. The M10 would have provided M1 to M25 east movements and there would have been a short section of D4M motorway immediately west of Park Street Roundabout where the M25 merges into the M10 to cater for the additional traffic on the weaving section. There would have been no east facing slips at the roundabout and traffic heading east would use the existing A405. There is however an exit slip westbound from the M25 to the A405. All road numbers shown are from the period. A5 is now A5183 and A405 east of A5 is now A414.
Location:	51.732669, -0.344627
Road:	M10, A405 , A5
Date:
Photographer:	Truvelo
Source:	own drawing


	Galleries \| M10 \| A405 \| A5 \| Park Street Roundabout \| St Albans \| M25

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:48, 12 May 2014		720 × 272 (30 KB)	Truvelo (talk \| contribs)	How Park Street Roundabout could have looked if an alternative route for the M25 was chosen in the 1970s. One of the options was for the motorway to run parallel to the A405. The M10 would have provided M1 to M25 east movements and ...

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