Projects

Tangerine Road Corridor – Dove Mountain to La Cañada Drive

Structural Design Marana / Oro Valley, Arizona

Structural Grace, Inc. provided structural engineering services for the CMAR widening of Tangerine Road Dove Mountain to La Canada Drive as a four-lane, divided desert parkway.

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Load Rating of Aravaipa Bridge

Structural Design Pinal County, Arizona

Bridge load rating analysis for the Aravaipa Bridge in eastern Pinal Co. SGI determined the loading, member section properties and capacities for the proprietary pinned truss (aka a Bailey Bridge) and produced a final Bridge Load Rating Report documenting the results of the analysis and recommending a safe posting load in order to satisfy the local Firewise Program requirements.

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Houghton Road Bridge over UPRR

Structural Design Tucson, Pima County, Arizona

Structural Grace assisted in creating the Design Concept Report and prepared the Structure Selection Report for the replacement bridge over the UPRR as part of the original project limits from Valencia to I-10. We presented structure concepts and the recommended structure type for the new bridge that will carry Houghton Road over the UPRR. The UPRR approved the conceptual design. Following this effort, Structural Grace was the prime consultant for the final design of the replacement of the Houghton Road bridge over the UPRR, designing the three-span pre-cast AASHTO Girder bridge and overseeing the subconsultants work associated with the completion of the Environmental Assessment, Design Concept Report, and final roadway geometric design.

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Valentine Road Bridge

Structural Design Dudleyville, Pinal County, Arizona

SGI performed a load rating analysis of the 60-year-old wooden Valentine Road Bridge, prepared a bridge alternative cost analysis, and provided PS&E documents for superstructure replacement. After determining an existing load rating of five tons, SGI evaluated bridge replacement alternatives considering the scour, environmental impacts, traffic impacts, schedule, and overall cost for three alternatives: multi-cell precast box culvert, conspan structure with wingwalls, and superstructure replacement. Ultimately, the superstructure was replaced with a new precast pre-stressed voided slab superstructure utilizing the innovative Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) for the substructure. The existing bridge was removed and replaced in 30 days.

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State Route 347 over UPRR Crossing

Structural Design Maricopa, Arizona

SGI contributed to the DCR, EA and final design for the TIGER Grant funded $55 million grade separation of State Route 347 over the Union Pacific Railroad (UPRR) in historic downtown Maricopa. Structural Grace designed a 3-span bridge to carry SR347 over UPRR and a single-span bridge over the Maricopa-Casa Grande Highway and roughly 1500’ of retaining walls on the project.

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Sunset Road – Silverbell Road to Interstate 10

2017 Arizona Consulting Engineering Companies (ACEC) Engineering Excellence Grand Award
MPA Common Ground Award (top 20)

Structural Design Tucson, Arizona

For over 30 years, Tucson commuters contended with limited access across the Santa Cruz River and connections to I-10 after the flood of 1983 washed away the Sunset Road Bridge over the Santa Cruz River. The restriction in east-west mobility reached a critical point in 2013 when ADOT announced the Ina Road Project which would close the Ina Road traffic interchange (TI) at I-10 and Ina Road Bridge over the Santa Cruz River in 2017 for reconstruction. 

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Valley Metro Rail – Northwest Extension Phase I

Transit Infrastructure Support Phoenix, Arizona

Structural Grace, Inc. designed three light rail transit passenger stations on the 3.2 mile Northwest Extension of the light rail system and coordinated Valley Metro Rail’s standardized design elements with architectural, electrical and civil disciplines as well as integrated art elements. Design elements included reinforced concrete foundations and architecturally-inspired steel columns and shade canopies and louvers.

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Valley Metro Rail – Northwest Extension Phase I, Dunlap Station Artwork Structural Design

Transit Infrastructure Support Phoenix, Arizona

Structural Grace, Inc. provided structural design and detailing services for a 60’x60’x20’ high structure as part of the artwork for Dunlap Station. This artwork structure provided shade and art elements that “funneled” the natural lighting around the station. The steel structure was designed with 20’ bays with intermediate framing at 10’ spacing and was designed to support both shade material and approximately 10 art pieces.

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Valley Metro Rail – Northwest Extension Phase I, Glendale Station Artwork Structural Design

Transit Infrastructure Support Phoenix, Arizona

Structural Grace, Inc. provided structural design and inspection services for the artwork installation at the Glendale Station. The artwork consists of a round steel column with ribbon steel that curves out and loops around to tie back into the column before looping out again (resembling a tree).

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Interstate 10 – Loop 303 Interchange

Construction Survey Tempe, Arizona

Structural Grace, Inc. provided construction survey services for the new I-10/SR303 TI in the West Valley.

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