A14Bologna B.go Panigale - Bologna San Lazzaro
Construction of lane 3 (14 Km)
|Work total::||€ 59,4 *million|
|Length of intervention:||13,7 Km|
|Noise barriers::||9 Km|
|New variable message panels:||45|
* Total investment of €246.4 million, of which €187 million for other interventions pursuant to the 2008 Convention.
The intervention consisted of expanding the A14, between 8 km and 22 km: i.e. the stretch that runs parallel to the Tangenziale di Bologna.
Following extended consultation with local authorities, which led to identification of local interventions in 2002, the project, initially consisting of the construction of lane 3 plus a hard shoulder, was shelved by local authorities in September 2002 as part of the complete reorganisation of the highway network in the province of Bologna.
Autostrade per l'Italia has thus drawn up a further solution that envisages a third dynamic lane (i.e. expansion of the hard shoulder and its use as a traffic lane at times of heavy traffic).
The project was approved at the Services Conference in May 2003.
Construction of the third dynamic lane was completed in December 2007. The lane was opened to traffic on completion of the technical tests, on 16 January 2008, six months ahead of schedule.
This was primarily achieved through the use of two Group companies, Spea and Pavimental; the latter with the approval of the grantor, ANAS, which acknowledged the delicate nature of the intervention, working under particularly critical conditions in terms of the heavy traffic and highly urbanised stretch of highway.
The third dynamic lane is managed by means of an integrated traffic control system, which informs motorists of traffic conditions and of the option of using the hard shoulder as a traffic lane, through variable message panels that are continuously updated.
Motorists were able to use the same 2 lanes as available prior to commencement of the works, throughout the intervention.
The project also envisages a series of local interventions, in part funded by Autostrade per l'Italia, including:
- construction of the new "Bologna Fiera" highway junction, completed 4 months ahead of schedule on 6 December 2006.
- construction of the new Crespellano junction on the ordinary road planning and construction of the by-pass on the Bazzanese Provincial Road
- changes to large part of the existing junction on the Tangenziale di Bologna, with the construction of new ramps and roundabouts to improve functionality and increase the free-flow of traffic
- installation of noise barriers on 9 km of highway in proximity of residential areas
construction of the noise abatement tunnel in S. Donnino.
|WORK PROGRESS||OPENING TO TRAFFIC|
|BO B.go Panigale - BO San Lazzaro WORK COMPLETED||JANUARY 20081|
|Bologna Fiera Junction WORK COMPLETED||DECEMBER 2006|
|1||The carriageway was made available in December 2007 with the third dynamic lane opened to traffic on 16 January 2008, six months ahead of schedule.|
A marked reduction in travel time and accident rate was recorded in the stretch running parallel to the Tangenziale di Bologna approximately one year after the third dynamic lane was opened to traffic. A significant reduction in air and noise pollution is also expected.
The main results achieved are set out below.
- Total time loss (1): -50,4%
- "Blocked traffic" hours: -9,4%
- overall accident rate: -25,2%
Pollution data is being collected. Improved results are forecast, in line with those of the A1 stretch between Barberino and Firenze Nord and of those recorded for the A4 stretch between Milan and Bergamo.
|1||Total Delay: difference between the average travel time detected on a stretch during a given period and the average time taken in free flowing traffic conditions at a typical, average speed for that stretch, multiplied by the number of vehicles.|