Euston Underpass

The Euston Underpass is a section of the A501 where it passes under the A400 grade-separated.

It is part of the London Inner Ring Road so marks the congestion-charging zone boundary although due to turning restrictions and one-way systems, traffic heading westbound on the ring-road may briefly enter Gower Street, then turn right into Grafton Way and right again into Tottenham Court Road in order to cross the junction to get to the A400 Hampstead Road, which is a two-way road and is primary. At this point the A400 splits into two one-way streets, as previously mentioned, Gower Street southbound and Tottenham Court Road northbound.

The underpass runs adjacent to the Metropolitan Railway (also carrying the Circle and Hammersmith & City underground lines), which runs under Euston Road.

The underpass was built in the 1960s as part of the dualling of Marylebone Road. It was built slightly north of Euston Road, allowing the underpass to be dug without disturbing the railway, and involved demolishing streets such as Eden Street.

The underpass has two lanes in each direction and has a speed limit of 30mph, regulated by cameras on entry where traffic tends to speed up. There are often queues on exiting the tunnel, particularly on its western exit where it meets the junction of Great Portland Street and the A4201 Albany Street.

Routes

Route	To	Notes
A400	Holloway, Camden Town
A501	Ring road (west), (A41, A40), Kilburn
A501	Ring road (east), (A1, A10, A11), The City, Euston, Kings Cross
A400	West End, Westminster, Holborn	Congestion Charge applies after Grafton Way (the southern edge of the one-way system associated with this junction)

Videos

Traffic at Euston (1970-9)

Traffic at Euston - Unissued / unused material. Various shots of traffic moving along Euston Road. Lorries, coaches, cars etc. Shots of traffic driving down into an underpass. More good traffic shot - the camera appears to be in the middle of the road.

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