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Category: Projects

Facility Projects

July 19, 2017 admin

In addition to the Highway Design, Bridge Design, and Construction Management/Inspection Projects, Tri-State Design and Development has also been associated…

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Posted in: Facility Projects, Projects

Construction Management & Inspection

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Tri-State Design and Development’s team of professionals has the construction management and inspection staff to carry out the clients’ needs…

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Posted in: Construction Management & Inspection, Projects

Transportation Design – Bridges & Roadways

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SR 1005, Section 002, Beaver County, PennDOT District 11-0 This project involved the replacement of a narrow 2-lane, 200’ span…

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Posted in: Projects, Transportation Design - Bridges & Roadways, Uncategorized

Open-End Engineering and Environmental Services Contracts

July 18, 2017 admin

As a prime consultant to PennDOT Districts 1-0 and 10-0, we performed various engineering and environmental services for a variety…

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Posted in: Transportation Design - Bridges & Roadways

Bridge Safety Inspection Program, PennDOT Districts 1-0, 10-0, 11-0 and 12-0, Allegheny County Public Works, the Port Authority of Allegheny County, the Airport Authority of Allegheny County, and U.S. Army Corps of Engineers

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Tri-State Design has substantial bridge safety inspection experience, including the inspection of over 300 state-owned bridges within various counties within…

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Posted in: Transportation Design - Bridges & Roadways

Allegheny County Project No. AA00-9407, Bridge Design Group A, Bridge Design

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This project consisted of the replacement design for a group of 4 minor bridges within Allegheny County, with a combined…

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Posted in: Transportation Design - Bridges & Roadways

SR 0050 – 001 Heidelberg Bridge over Chartiers Creek, Allegheny County, PennDOT District 11-0

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Tri-State Design was engaged to design the replacement of an existing, deteriorated, six-span bridge and its approach roadways. The project included…

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Posted in: Transportation Design - Bridges & Roadways

SR 0043 Section 52G and 52J, Mon-Fayette Expressway, Washington and Westmoreland Counties, Pennsylvania Turnpike Commission

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Tri-State was responsible for the design for the referenced two dual structures. The design alternatives were for a 3-span continuous…

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Posted in: Transportation Design - Bridges & Roadways

SR 3056, Section 005, Allegheny County, PennDOT District 11-0

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This project consisted of the replacement of an existing 138’, 3-span bridge with approach roadways. As a result of the…

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Posted in: Transportation Design - Bridges & Roadways

SR 0079, Section A4 Interstate 79, Mercer County, PennDOT District 1-0

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This project involved the rehabilitation of an 8-mile portion of a 4-lane divided highway (I-79, Section A4). Tri-State was responsible…

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Posted in: Transportation Design - Bridges & Roadways

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