Editing Interstate 691 (section)

{{short description|Interstate Highway in Connecticut}}
{{More citations needed|date=November 2023}}
{{Use mdy dates|date=December 2022}}
{{Use American English|date=December 2022}}
{{Infobox road
| state = CT
| type = I
| route = 691
| alternate_name = Henry D. Altobello Highway
| map = {{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|frame-lat=41.55|frame-long=-72.838|zoom=11|type=line|raw={{Wikipedia:Map data/Wikipedia KML/Interstate 691}}}}
| map_custom = yes
| map_notes = I-691 highlighted in red
| spur_type = I
| spur_of = 91
| length_mi = 8.38
| length_ref = <ref name="fhwa">{{cite web |last=Starks |first=Edward |date=January 27, 2022 |title=Table 2: Auxiliary 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/table02.cfm |access-date=December 11, 2022 |work=FHWA Route Log and Finder List |publisher=[[Federal Highway Administration]]}}</ref>
| established = 1988 (completed)
| direction_a = West
| terminus_a = {{Jct|state=CT|I|84}} in [[Southington, Connecticut|Southington]]
| junction = {{Jct|state=CT|US|5}} in [[Meriden, Connecticut|Meriden]]<br>{{Jct|state=CT|CT|15}} / [[Wilbur Cross Parkway]] in Meriden
| direction_b = East
| terminus_b = {{Jct|state=CT|I|91|CT|66}} in Meriden
| counties = [[Hartford County, Connecticut|Hartford]], [[New Haven County, Connecticut|New Haven]]
| previous_type = I
| previous_route = 684
| next_type = US
| next_route = 1
}}
'''Interstate&nbsp;691''' ('''I-691''') is an [[auxiliary Interstate Highway]] in [[Connecticut]] running from [[Interstate 84 in Connecticut|I-84]] in [[Southington, Connecticut|Southington]] east to [[Interstate 91|I-91]] in [[Meriden, Connecticut|Meriden]]. According to the [[Federal Highway Administration]], it is {{convert|8.38|mi|km}} in length;<ref name="fhwa" /> however, the [[Connecticut Department of Transportation]] (CTDOT) includes the 0.54 miles (0.87 km) of the exit ramp that I-691 uses to the merge with westbound [[Interstate 84 in Connecticut|I-84]], making their recorded length {{Convert|8.92|mi|km}} long.<ref name="log">{{cite web |date=December 31, 2014 |title=Highway Log - Connecticut State Numbered Routes and Roads |url=http://www.ct.gov/dot/LIB/dot/Documents/dpolicy/hwylog/hwylog.pdf |url-status=dead |archive-url=https://web.archive.org/web/20150905063334/http://www.ct.gov/dot/LIB/dot/Documents/dpolicy/hwylog/hwylog.pdf |archive-date=September 5, 2015 |access-date=December 11, 2022 |work=[[Connecticut Department of Transportation]]}}</ref>

I-691 is also known as the '''Henry D. Altobello Highway''' for its entire length.