| Country: | ITA |
| Type: | A |
| Route: | 4 |
| Alternate Name: | Autostrada Serenissima Serenissima motorway |
| Established: | 1927 |
| Direction A: | West |
| Terminus A: | Turin |
| Junction: | A55 in Turin A5 in Borgo d'Ale A26 in Greggio A50 and A52 in Rho A8 in Pero A51 in Carugate A58 in Agrate Brianza A35 in Ospitaletto A21 in Brescia A22 in Verona A31 in Vicenza A13 in Padova A57 in Venice A27 in Preganziol A28 in Santo Stino di Livenza A23 in San Giorgio di Nogaro A34 in Palmanova RA13 in Sistiana |
| Direction B: | East |
| Terminus B: | Trieste |
| Length Km: | 523.1 |
| Regions: | Piedmont, Lombardy, Veneto, Friuli-Venezia Giulia |
| Map: | Italia - mappa autostrada A4.svg |
| E-Road: | E55, E64 and E70 |
| Previous Type: | A |
| Previous Route: | 3 |
| Next Type: | A |
| Next Route: | 5 |
The Autostrada A4, or Autostrada Serenissima ("Serenissima motorway"), is an autostrada (Italian for "motorway") long in Italy located in the regions of Piedmont, Lombardy, Veneto and Friuli-Venezia Giulia which connects Turin and Trieste via Milan and Venice crossing the entire Po Valley from west to east.
The city of Venice (or rather, Mestre, a mainland frazione of Venice) originally formed a bottleneck on the A4, but is now bypassed by the Passante di Mestre (the old route through Mestre was renumbered A57). The A4 passes just north of the city of Milan, where it is toll-free. It is a part of the E55, E64 and E70 European routes.
Due to the different companies that manage the different parts of the motorway, it is often referred to as formed by five sections: Turin-Milan, Milan-Brescia, Brescia-Padua, Padua-Venice and Venice-Trieste. As it runs through the whole Pianura Padana, which is a densely populated and highly industrialized area, A4 is one of the most trafficked motorways of Italy.
Before World War II, three sections of the motorway were built: Turin-Milan, Milan-Brescia and Padua-Venice. The first section built was Milan-Bergamo, which opened on 24 September 1927, being just the second motorway to open, following the Autostrada dei Laghi in 1924/25. On 29 August 1931, it was extended to Brescia. On 25 October 1932, the Turin-Milan section opened, and on 15 October 1933, the Padua-Venice section.
The two sections became connected on 10 February 1962, when the Brescia-Padua section opened. The Venice-Trieste section was opened on 22 February 1970. The original road through Mestre, now designated A57 and named "Tangenziale di Mestre", opened on 3 September 1972.[1]
A4 is a dual-carriageway, six-lane motorway for most of its length. The stretch between Milano Est tollgate and Bergamo has been an eight-lane motorway since 30 September 2007. The stretch from Venice to Trieste is instead still a four-lane motorway, but it is planned to upgrade this stretch over motorway to six lanes.
The passante di Mestre is a part of the A4 motorway, opened to traffic on 8 February 2009. The objective of the route is to reduce the volume of auto- and truck-based traffic passing through Mestre (a mainland frazione of Venice) to reach non-local destinations like Austria, Slovenia and other Eastern European countries.
The new includes three lanes plus one emergency lane. Each lane measures apart from the emergency lane which measures only, and the new stretch of motorway totals .
Autostrada A4 Passes through Turin, Settimo Torinese, Novara, Cusano Milanino, Cinisello Balsamo, Monza, Bergamo, Brescia, Verona,Vicenza, and Padua.
| TURIN - TRIESTE Autostrada Serenissima | |||||
| Exit | ↓km↓ | ↑km↑ | Province | European Route | |
|---|---|---|---|---|---|
| Torino C.so Giulio Cesare | 0.0 | 523.1 | TO | ||
| Torino Abbadia di Stura Tangenziale Nord Turin Caselle Airport Aosta Traforo del Frejus - France–Italy border | 2.0 | 521.1 | TO | ||
| Rest area "Settimo Torinese" | 3.0 | 520.1 | TO | ||
| Settimo Torinese | 4.0 | 519.1 | TO | ||
| Brandizzo Leinì, Volpiano | 10.0 | 513.1 | TO | ||
| Chivasso ovest | 14.0 | 509.1 | TO | ||
| Chivasso centro Caluso, Ivrea | 16.0 | 507.1 | TO | ||
| Chivasso est Raccordo Chivasso est | 19.0 | 504.1 | TO | ||
| Rondissone | 24.0 | 499.1 | TO | ||
| Toll gate Rondissone | 24.3 | 498.8 | TO | ||
| Rest area "San Rocco" | 24.4 | align="right" | -- | VC | |
| Rest area "Cigliano" | -- | 491.2 | VC | ||
| Cigliano | 32.9 | 490.2 | VC | ||
| Borgo d'Ale | 36.8 | 486.3 | VC | ||
| Diramazione Ivrea - Santhià Diramazione Stroppiana-Santhià Aosta Aosta Genova | 43.8 | 479.3 | |||
| Santhià Biella | 45.2 | 477.9 | |||
| Carisio Biella | 54.4 | 468.7 | |||
| 60.0 | 463.1 | VC | |||
| Rest area "Villarboit" | 64.2 | 458.9 | VC | ||
| 67.5 | 455.6 | VC | |||
| Genova - Gravellona T. | 72.4 | 450.7 | NO | ||
| 73.6 | 449.5 | NO | |||
| Novara Ovest | 82.9 | 440.2 | NO | ||
| Rest area "Novara" | 88.7 | 434.4 | NO | ||
| Novara Est | 90.5 | 432.6 | NO | ||
| Marcallo-Mesero Strada statale 336 dell'Aeroporto della Malpensa Milan Malpensa Airport | 104.5 | 418.6 | MI | ||
| Arluno | 110.9 | 412.2 | MI | ||
| Rho | 118.4 | 404.7 | MI | ||
| Toll gate Milano Ghisolfa | 120.8 | 402.3 | MI | ||
| Tangenziale Ovest di Milano Bologna Genova Varese, Sesto C. Milan Malpensa Airport Como, Chiasso | 120.9 | 402.2 | MI | ||
| Rest area "Pero" | 122.7 | 400.4 | MI | ||
| Pero | 122.9 | 400.2 | MI | ||
| Varese Milano V.le Certosa Fiera Milano | 125.0 | 398.1 | MI | ||
| Cormano Bresso - Milano Niguarda Superstrada Milano-Meda-Cermenate | 129.5 | 393.6 | MI | ||
| Rest area "Lambro" | 133.6 | 389.5 | MI | ||
| Cinisello Balsamo-Sesto San Giovanni Superstrada Milano-Lecco-Morbegno Milano V.le Zara | 136.1 | 387.0 | MI | ||
| Toll gate Milano est | 138.0 | 385.1 | MB | ||
| Tangenziale Nord Milano Monza | 138.0 | 385.1 | MB | ||
| Tangenziale Est Milano Milan Linate Airport | 144.5 | 378.6 | MB | ||
| 145.5 | 377.6 | MB | |||
| Tangenziale est esterna di Milano Milan Linate Airport | 146.3 | 376.8 | MB | ||
| Rest area "Brianza" | 148.4 | 374.7 | MB | ||
| 149.7 | 373.4 | MB | |||
| 156.8 | 366.3 | MI | |||
| 160.3 | 362.8 | BG | |||
| Rest area "Brembo" | 165.7 | 357.4 | BG | ||
| 165.4 | 357.7 | BG | |||
| Bergamo Milan Bergamo Airport | 172.1 | 351.0 | BG | ||
| 178.7 | 344.4 | BG | |||
| 187.3 | 335.8 | BG | |||
| 190.6 | 332.5 | BG | |||
| 192.8 | 330.3 | BS | |||
| Rest area "Sebino" | 197.5 | 325.6 | BS | ||
| 201.0 | 322.1 | BS | |||
| 206.0 | 317.1 | BS | |||
| 210.0 | 313.1 | BS | |||
| Rest area "Val Trompia" | 213.7 | 309.4 | BS | ||
| Brescia Ovest Fiera di Brescia | 214.9 | 308.2 | BS | ||
| Piacenza Brescia Centro Brescia Sud Poliambulanza | 222.3 | 300.8 | BS | ||
| Rest area "S. Giacomo" | 226.5 | 296.6 | BS | ||
| Brescia Est Brescia Montichiari Airport | 228.8 | 294.3 | BS | ||
| 243.9 | 279.2 | BS | |||
| Rest area "Monte Alto" | 244.6 | 278.5 | BS | ||
| 251.3 | 271.8 | BS | |||
| 258.8 | 264.3 | VR | |||
| Castelnuovo del Garda (under construction) Strada Statale 450 di Affi | 263.1 | 260.0 | VR | ||
| Sommacampagna Verona Villafranca Airport | 270.4 | 252.7 | VR | ||
| Rest area "Monte Baldo" | 271.7 | 251.4 | VR | ||
| Autostrada A22 Verona nord Verona Villafranca Airport | 275.3 | 247.8 | VR | ||
| Verona Sud | 279.8 | 243.3 | VR | ||
| Verona Est Transpolesana: Legnago - Rovigo | 289.7 | 233.4 | VR | ||
| Rest area "Scaligera" | 300.7 | 222.4 | VR | ||
| 302.4 | 220.7 | VR | |||
| 311.4 | 211.7 | VI | |||
| 320.6 | 202.5 | VI | |||
| Rest area "Villa Morosini ovest" | 324.8 | 198.3 | VI | ||
| Vicenza Ovest | 326.6 | 196.5 | VI | ||
| Vicenza Est | 334.2 | 188.9 | VI | ||
| Piovene Rocchette Vicenza nord | 335.6 | 187.5 | VI | ||
| Rest area "Tesina est" | 336.0 | 187.1 | VI | ||
| 343.3 | 179.8 | VI | |||
| Rest area "Limenella" | 354.5 | 168.6 | PD | ||
| Padova Ovest Tangenziale di Padova | 356.2 | 166.9 | PD | ||
| Padova Est Tangenziale di Padova | 363.3 | 159.8 | PD | ||
| Bologna - Padova Padova industrial area | 364.2 | 158.9 | PD | ||
| Rest area "Arino" | 372.5 | 150.6 | VE | ||
| Tangenziale di Venezia - Mestre (west) | 374.6 | 148.5 | VE | ||
| 380.9 | 142.2 | VE | |||
| 389.4 | 133.7 | VE | |||
| Preganziol | 400.0 | 123.1 | TV | ||
| Belluno Venezia Tessera Aiport Tangenziale di Venezia (north) | 402.0 | 121.1 | TV | ||
| Tangenziale di Venezia - Quarto d'Altino (east) Venezia Tessera Aiport | 407.0 | 116.1 | VE | ||
| Meolo-Roncade | 416.0 | 107.1 | VE-TV | ||
| San Donà di Piave-Noventa | 424.0 | 99.1 | VE | ||
| Rest area "Calstorta" | 431.0 | 92.1 | VE | ||
| Cessalto | 432.0 | 91.1 | TV | ||
| Santo Stino di Livenza | 439.0 | 84.1 | VE | ||
| Conegliano | 452.0 | 71.1 | VE | ||
| Rest area "Fratta" | 456.0 | 67.1 | VE | ||
| Latisana Bretella Latisana | 467.0 | 56.1 | UD | ||
| San Giorgio di Nogaro-Porpetto | 483.0 | 40.1 | UD | ||
| Rest area "Gonars" | 487.0 | 36.1 | VE | ||
| Tarvisio Austria–Italy border - Villach - Vienna | 490.0 | 33.1 | UD | ||
| Palmanova | 491.0 | 32.1 | UD | ||
| Villesse - Gorizia Italy–Slovenia border - Nova Gorica | 501.0 | 22.1 | GO | ||
| Redipuglia - Monfalcone Ovest di Ronchi dei Legionari Trieste Ronchi dei Legionari Airport | 506.0 | 17.1 | GO | ||
| Toll gate Lisert | 515.0 | 8.1 | GO | ||
| Monfalcone Est | 515.0 | 8.1 | GO | ||
| Rest area "Duino" | 519.0 | 4.1 | TS | ||
| Duino | 520.0 | 3.1 | TS | ||
| Sistiana Trieste - Italy–Slovenia border - Rabuiese - Istria | 523.0 | 0.1 | |||
| Spur Sistiana - Padriciano Italy–Slovenia border Ljubljana | 523.1 | 0.0 | TS | ||
| AUTOSTRADA A4/A5 Ivrea-Santhià connection | |||||
| Exit | ↓km↓ | ↑km↑ | Province | European route | |
|---|---|---|---|---|---|
| 0.0 | 23.6 | TO | |||
| Albiano ex del Lago di Viverone - Ivrea | 7.9 | 15.7 | TO | ||
| Rest area "Viverone" | 13.0 | 10.6 | TO | ||
| Torino - Milano Santhià | 23.5 | 0.1 | VC | ||
| Diramazione Stroppiana - Santhià Genova - Gravellona Toce | 23.6 | 0.0 | VC | ||
| AUTOSTRADA A4/A26 A4/A26 Stroppiana-Santhià connection | |||||
| Exit | ↓km↓ | ↑km↑ | Province | European route | |
|---|---|---|---|---|---|
| 0.0 | 30.7 | VC | |||
| Rest area "Le Risaie" | - | 29.3 | |||
| Vercelli Ovest | 8,0 | 22.7 | |||
| Rest area "Cavour" | 29.0 | - | |||
| Torino - Milano Santhià | 30.6 | 0.1 | |||
| A4/5 Ivrea Torino - Aosta | 30.7 | 0.0 | |||
| RACCORDO EST DI CHIVASSO Chivasso connection | |||||
| Exit | ↓km↓ | ↑km↑ | Province | ||
|---|---|---|---|---|---|
| Torino - Milano Exit Chivasso Est | 0.0 | 5.0 | TO | ||
| Rondissone Ovest Padana Superiore | 1.6 | 3.4 | |||
| Verolengo del Monferrato | 5.0 | 0.0 | |||
| BRETELLA DI LATISANA Latisana connection | |||||
| Exit | ↓km↓ | ↑km↑ | Province | ||
|---|---|---|---|---|---|
| Exit Latisana | 0.0 | 2.6 | UD | ||
| Roundabout SP75 | 1.6 | 1.0 | |||
| della Venezia Giulia | 2.6 | 0.0 | |||