Fourth Avenue Underpass

Fourth Avenue Underpass (HML2K)

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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Constructed 2009

Tucson City Engineer ― Jim Clock
Design Engineer ― Cannon & Associates, Inc. TranSystems Corp.

Contractor ― Sundt Construction, Inc.

Long known as the Gateway to the East End of Downtown, the Fourth Avenue Underpass in a vital link between the University of Arizona, the Fourth Avenue merchants and the Downtown Tucson Business District. In 1988, as part of a movement to revitalize the Downtown area, the City of Tucson moved to reconstruct the historic underpass to improve access under the Union Pacific Railroad and to provide the framework for Downtown Links, the final mile of the Barraza-Aviation Parkway.

With two 14-foot-wide travel lanes, raised sidewalks (8-foot-wide on one side and 20-foot-wide on the other), dedicated 6-foot-wide bicycle lanes, provisions for the Tucson Modern Streetcar, and two overhead pedestrian bridges, the new Fourth Avenue Underpass greatly improves all modes of travel between the City Center and bustling Fourth Avenue businesses.

The Fourth Avenue Underpass is 245 feet long and supports three railroad tracks and Downtown Links. The structural system consists of cast-in-place reinforced concrete skewed slab spans supported on concrete walls and columns. The underpass features a modern architectural treatment with rusticated retaining walls, oval-shaped concrete columns, and metal railing to separate vehicular travel lanes and pedestrian walkways. The reconstruction of Fourth Avenue Underpass began on June 21, 2007, and opened to traffic on August 20, 2009. The reopening dedication was attended by nearly 10,000 people who celebrated this transportation milestone for the Tucson Community.
Details
HM NumberHML2K
Series This marker is part of the More Than Words series
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Marker ConditionNo reports yet
Date Added Wednesday, October 15th, 2014 at 10:26pm 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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