A Clash Waiting to Happen: At the Intersection of Utility ...A Clash Waiting to Happen October 16,...

A Clash Waiting to Happen October 16, 2019

A Clash Waiting to Happen: At the Intersection of Utility and Transportation InfrastructureGreg Faber, ROW DivisionGabriel Longoria, CRP District Design

October 16, 2019


Table of contents

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3Roles within Utility Investigations (SUE)

Clash: 3-D Design and Utility Investigation

Project Successes

A Look into the Future

Questions

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2

3

4

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Roles Within a 3-D Environment

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Delivery of Projects Aligns with TxDOT goals of “on time, on budget” projects – reduces change orders and costs Assists with the implementation of the AMA strategy Builds partnerships with consultants and utility companies Improves the quality of projects and lives for all Texans!

TxDOT Districts

Develop a process

Who’s involved? (Designer)

What's involved?

Assumptions Document

Develop clear project RFP

Explain the problem

Build workflow for information

Design to construction

Consultants

Assist clients in understanding what can be delivered

What is the best route to deliver the scope?

2-D Product

Foundation of 3-D Deliverable

Data stewardship

Utility Report

Utility Companies

Data stewardship

Benefits from 3-D

Improved collaboration

Less impact to facilities

Accurate data on facilities


Clash: 3-D Design and Utility Investigation

TxDOT designing roadways in 3-D

– Need for 3-D Utility Investigations increases

TxDOT Districts have to know what they need

– Limits of the Utility Investigation

» Assumptions Document

– Entire project limits or areas/specific utilities in areas of high risk

Result: Enhances AMA, visualization of conflicts

– Through Microstation File or Google Earth

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Project Successes (US 77 Relief Route in Nueces County)

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CRP had a level C/D SUE already completed from the advanced planning stage

CRP obtained a contract to acquire level A/B SUE with a 3-D deliverable to be utilized with OpenRoads

– Designer, Utility Coordinator, and Contract PM determined the level A/B needs prior to work authorization using the level C/D SUE

3-D model of the SUE was developed in SUDA by the consultant

3-D SUE was referenced directly into the designer’s 3-D roadway model

Cross Sections cut from the designer’s model would show proposed roadway and existing utilities

– There was a reduced effort for providing cross sections for Utility Coordination with use of 3-D SUE and OpenRoads


Project Successes (New Location Conflicts)

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2-D of major gas conflict 3-D model of proposed roadway & gas line

Cross section provided to gas line owner to show conflict


Project Successes (Existing and New Location Conflicts)

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Cluster located on new ROW adjacent to exist ROW 3-D model of proposed roadway & utility cluster

Cross section provided to gas line owner to show conflict w/ditch & other utilities. Includes riprap cap as option


Project Successes (Example)

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Multiple Conflicts w/Bridge Structure



Building upon the successes and lessons learned

– The next step in this process is…

• Obtaining As-Built data on adjusted lines

– Incorporating As-Built and Utility Investigation data into the construction plans

– BNSF process

• Utility data repository within new utility management system

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Typical Sections showing Existing and Proposed Utilities

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Improved process for Utility conflicts during PS&E– Identification – Communication– Resolution

Improved PS&E for the Contractor to build from– Resolving or mitigating known conflicts earlier– Additional tools to manage known conflicts

Improved Quality of Life for All Texans– Quicker Construction– Improved project costs– Reduction in Construction

delays

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Questions

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Questions

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Without 3-D SUE, this could

be YOU!

A Clash Waiting to Happen: At the Intersection of Utility ...A Clash Waiting to Happen October 16,...

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