Editing Interstate 91 (section)

{{Short description|Interstate Highway in the U.S. states of Connecticut, Massachusetts, and Vermont}}
{{Good article}}
{{Use mdy dates|date=May 2019}}
{{Use American English|date=December 2022}}
{{Infobox road
| country = USA
| type = I
| route = 91
| map = {{maplink-road}}
| map_custom = yes
| map_notes = I-91 highlighted in red
| length_mi = 290.37
| length_ref = <ref name=fhwa>{{cite web |last=Starks |first=Edward |date=January 27, 2022 |title=Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways |url=https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |access-date=December 10, 2022 |work=FHWA Route Log and Finder List |publisher=[[Federal Highway Administration]] |archive-date=July 3, 2017 |archive-url=https://web.archive.org/web/20170703213613/https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |url-status=live }}</ref>
| direction_a = South
| direction_b = North
| terminus_a = {{jct|state=CT|I|95}} in [[New Haven, Connecticut|New Haven, CT]]
| terminus_b = {{jct|province=QC|A|55}} at the [[Canada–United States border|Canadian border]]
| junction = {{plainlist|<!-- Major junctions only; Only 8-10 most major intersections and cities belong here; please read [[WP:USRD/STDS]] for more info -->
*{{jct|state=CT|CT|15}} / [[Wilbur Cross Parkway]] in [[Meriden, Connecticut|Meriden, CT]]
*{{jct|state=CT|I|691|CT|66}} in Meriden, CT
*{{jct|state=CT|CT|9}} in [[Cromwell, Connecticut|Cromwell, CT]]
*{{jct|state=CT|I|84|US|6|US|44}} in [[Hartford, CT]]
*{{jct|state=MA|I|291|US|20|MA|20A}} in [[Springfield, Massachusetts|Springfield, MA]]
*{{jct|state=MA|I|391}} in [[Chicopee, Massachusetts|Chicopee, MA]]
*{{jct|state=MA|I|91|US|5}} at the [[West Springfield, Massachusetts|West Springfield]]&ndash;[[Holyoke, Massachusetts|Holyoke, MA]] line
*{{jct|state=MA|MA|9}} in [[Northampton, Massachusetts|Northampton, MA]]
*{{jct|state=MA|MA|2}} in [[Greenfield, Massachusetts|Greenfield, MA]]
*{{jct|state=VT|I|89}} in [[White River Junction, Vermont|White River Junction, VT]]
*{{jct|state=VT|I|93}} in [[St. Johnsbury, Vermont|St. Johnsbury, VT]] }}
| system1 = {{Infobox road/browselinks/USA|state=CT}}
| system2 = {{Infobox road/browselinks/USA|state=MA}}
| system3 = {{Infobox road/browselinks/USA|state=VT}}
| browse = {{ct browse|previous_type=Route|previous_route=89|route=CT|next_type=Route|next_route=94}}{{ma browse|previous_type=I|previous_route=90|route=MA|next_type=I|next_route=93}}{{vt browse|previous_type=I|previous_route=89|route=VT|next_type=I|next_route=93}}
| states = [[Connecticut]], [[Massachusetts]], [[Vermont]]
| counties = '''CT:''' [[New Haven County, Connecticut|New Haven]], [[Middlesex County, Connecticut|Middlesex]], [[Hartford County, Connecticut|Hartford]]<br/>'''MA:''' [[Hampden County, Massachusetts|Hampden]], [[Hampshire County, Massachusetts|Hampshire]], [[Franklin County, Massachusetts|Franklin]]<br/>'''VT:''' [[Windham County, Vermont|Windham]], [[Windsor County, Vermont|Windsor]], [[Orange County, Vermont|Orange]], [[Caledonia County, Vermont|Caledonia]], [[Orleans County, Vermont|Orleans]]
}}
'''Interstate&nbsp;91''' ('''I-91''') is an [[Interstate Highway System|Interstate Highway]] in the [[New England]] region of the United States. It is the primary north–south thoroughfare in the western part of the region. Its southern terminus is in [[New Haven, Connecticut]],<ref>{{google maps |url= https://maps.google.com/maps?q=New+Haven,+CT&ll=41.302765,-72.914028&spn=0.014517,0.022505&hl=en |title= New Haven, CT |access-date= June 8, 2009}}</ref> at [[Interstate 95|I-95]], while the northern terminus is in [[Derby Line, Vermont]], at the [[Canada–United States border]]. Past the [[Derby Line–Rock Island Border Crossing]], the road continues into Canada as [[Quebec Autoroute 55]]. I-91 is the longest of three Interstate highways whose entire route is located within the New England states (the other two highways being [[Interstate 89|I-89]] and [[Interstate 93|I-93]]) and is also the only primary (two-digit) Interstate Highway in New England to intersect all five of the other highways that run through the region. The largest cities along its route, from south to north, are [[New Haven, Connecticut]]; [[Hartford, Connecticut]]; [[Springfield, Massachusetts]]; [[Northampton, Massachusetts]]; [[Greenfield, Massachusetts]]; [[Brattleboro, Vermont]]; [[White River Junction, Vermont]]; [[St. Johnsbury, Vermont]]; and [[Newport (city), Vermont|Newport, Vermont]].