It is 12 months since the body of Jesbir Singh Khela, from Letchworth, was found near Langford.
A hospice charity is closing many of its services covering dementia, transport and its cafe.
Engineers were on site to fix a "complete failure of the signalling system".
Police attended the scene and one lane was closed, says National Highways.
Hundreds of halls were built as alcohol-free spaces, yet their past is now forgotten, says author.
Passengers are being advised to check before they travel as major engineering work takes place.
The men are being questioned after a 47-year-old man was found dead in a destroyed Skoda in February.
A hospice is starting a consultation with staff and patients to see where budget cuts could be made.
Garden House Hospice says it had to close beds after a decline in donations and rising costs.
