Historic Fourth Avenue Underpass

Historic Fourth Avenue Underpass (HML2J)

Location: Tucson, AZ 85705 Pima County
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Country: United States of America
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N 32° 13.429', W 110° 57.945'

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Inscription

Constructed 1916 - Demolished in 2008

Tucson City Engineer ― J. Mos Ruthrauff
Design Engineer ― L. R. Walker
Contractor ― Bent Brothers

In 1913, in an effort to separate pedestrians, vehicles, bicycles and wagons from trains, the City of Tucson embarked on a major grade separation project to have Fourth Avenue, a major thoroughfare in Downtown Tucson, travel beneath the Southern Pacific Railroad.

The original underpass consisted of two 12-foot-wide lanes and 6-foot-wide raised pedestrian walkways on each side. The underpass was approximately 257 feet long so that it could carry up to eleven railroad tracks. The structural system was cast-in-place reinforced concrete skewed slab spans supported on concrete walls and columns. The underpass featured a classical revival architectural treatment with recessed rectangular panels cast into the walls. A series of 3-foot-high concrete posts, connected with heavy chains served as railings to separate the sidewalks from travel lanes.

Before being demolished in 2007, the original underpass was recognized as Arizona's oldest urban grade separated roadway and it was listed on the National Register of Historic Structures.
Details
HM NumberHML2J
Series This marker is part of the More Than Words series
Tags
Marker ConditionNo reports yet
Date Added Sunday, September 21st, 2014 at 7:03pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)12S E 503227 N 3565245
Decimal Degrees32.22381667, -110.96575000
Degrees and Decimal MinutesN 32° 13.429', W 110° 57.945'
Degrees, Minutes and Seconds32° 13' 25.74" N, 110° 57' 56.70" W
Driving DirectionsGoogle Maps
Area Code(s)520
Closest Postal AddressAt or near 400-448 E Stevens Ave, Tucson AZ 85705, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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