View source for Strada statale 4 dir

{{Short description|Italian state highway}}

{{Infobox road
| country = ITA
| terminus_a = [[Strada statale 4 Via Salaria]] at [[Passo Corese]]
| next_route = 5
| next_type = SS
| previous_dab = Strada statale 4 Via Salaria
| previous_route = 4
| previous_type = SS
| terminus_b = [[Provincial road (Italy)|Provincial road]] SP 15/A Tiberina at [[Fiano Romano]]
| junction = [[Autostrada A1 (Italy)|Autostrada A1]] at [[Fiano Romano]]
| established = 1964
| regions = [[Lazio]]
| length_notes = 
| length_ref = 
| length_km = 4.5
| maint = [[ANAS]]
| map = 
| alternate_name = 
| route = 4dir
| type = SS
| next_dab = Strada statale 5 Tiburtina Valeria
}}

'''Strada statale 4 Dir''' or '''SS 4 Dir''' or '''SS 4 Salaria Dir''' is a short [[State highway (Italy)|Italian state highway]], linking [[Strada statale 4 Via Salaria]] at [[Passo Corese]] to the [[A1 motorway (Italy)|A1 motorway]] at [[Fiano Romano]].<ref>{{Cite web|title=ANAS regional roads and highway|url=https://www.stradeanas.it/it/le-strade/anas-regione|website=italian National Autonomous Roads Corporation [[ANAS]]}}</ref>

It is a [[dual carriageway]] highway long only {{convert|4.5|km|mi}}, made in 1964 and managed by [[ANAS]]. It is recognized as a road of national interest.<ref>Decree of President of the Council of Ministers 20 February 2018, ''Revisione delle reti stradali di interesse nazionale e regionale ricadenti nelle Regioni Abruzzo, Basilicata, Calabria, Campania, Lazio, Liguria, Marche, Molise, Puglia, Toscana e Umbria'', published on laws gazetta n. 98, 28 February 2018</ref>

== Route ==
Strada statale 4 Dir was built to make more fluid traffic between the province of [[Rieti]] and Rome, taking advantage to the fact that, in that area, Via Salaria and the A1 motorway are very close ({{convert|3|km|mi}}) but divided by Tiber river.

In fact, ''SS 4 Dir'' allows to travel from Passo Corese to Rome entirely on fast-flowings roads, linking Via Salaria to the A1 motorway northbound branch (''A1 Dir'') which is connected to [[Grande Raccordo Anulare]] and, from this, to ''Tangenziale Est'' of Rome. The alternative would be to use the [[Strada statale 4 Via Salaria]] that is a single carriage highway, extending travel times and clogging up traffic.
{{RJL|date=December 2021}}
{| class="wikitable" 
|- align="center" bgcolor="00408B" style="color: white;font-size:100%;"
| colspan="4" | {{symbol|Strada Statale 4dir Italia.svg|65}}<br />''Via Salaria''
|-
!Type!!Intersection!!↓Distance↓!!Province
|-
| [[File:AB-Vzw-blau.svg]] || {{symbol|Strada Statale 4 Italia.svg|50}} [[Strada statale 4 Via Salaria|Via Salaria]] ||align="right"|{{convert|0.0|km|mi|abbr=on}} ||align="center" rowspan="1"|[[Provincia di Rieti|Rieti]] 
|-
| {{symbol|AB-AS-blau.svg}} || {{symbol|Italian traffic signs - icona industria.svg}} Passo Corese logistics hub <br> {{symbol|Italian traffic signs - icona stazione FS.svg}} <small>[[Fara in Sabina]] railroad station</small> ||align="right"|{{convert|0.8|km|mi|abbr=on}} ||align="center" rowspan="5"|[[Metropolitan City of Rome Capital|Rome]] 
|-
| {{symbol|Italian traffic signs - ponte blu.svg|17}} || {{symbol|Italian traffic signs - icona mare fiume lago.svg}} [[Tiber|Tiber river]] || align="right"| {{convert|1.1|km|mi|abbr=on}} 
|-
| {{symbol|AB-AS-blau.svg}} || [[Fiano Romano]] ||align="right"| {{convert|2.8|km|mi|abbr=on}}
|-
| {{symbol|Logo toerit blauw.svg|22}} || {{symbol|Autostrada A1dir Italia.svg|27}} [[A1 motorway (Italy)|A1 northbound branch<br><small>(Fiano Romano motorway exit)</small>]]<br><small>''(only entry towards Passo Corese)''</small> ||align="right"| {{convert|3.7|km|mi|abbr=on}}
|-
| [[File:AB-Vzw-blau.svg]]  || {{symbol|Autostrada A1dir Italia.svg|27}} [[A1 motorway (Italy)|A1 northbound branch<br><small>(Fiano Romano motorway exit)</small>]]<br><small>''(only exit towards Rome)''</small><br>{{symbol|Strada Provinciale 15a Italia.svg|50}} Provincial road SP 15/A Tiberina- Fiano Romano A1 toolboth || align="right" | {{convert|4.5|km|mi|abbr=on}}
|}

== References ==
<references />

{{State highways in Italy}}

[[Category:State highways in Italy|004 dir]]
[[Category:Fiano Romano]]