© 2014 HDR, all rights reserved.

2016 OTECAdam Lynch

Boosting CRAVETM

with the Power of VISSIM

October 26, 2016

Value Engineering (VE)

Cost Risk Assessment

(CRA)

HDR’s CRAVETM

Importance of Vissim

Topics Covered

Improves the Value

Solution based

More than Cutting

Corners

The TraditionalValue Engineering (VE)

Value = Increase in

Benefits-to-Cost Ratio

Is that enough?

The TraditionalValue Engineering (VE)

What could go wrong?

How much could it cost

What if this risk could be mitigated?

Traditional Cost-Risk Analysis (CRA)

CRA – Loosing great

ideas

VE – Add more risk?

Shortfalls of Independent CRA and VE studies

CRAVE™ combines Cost

Risk Analysis + Value

Engineering in one

coordinated workshop.

Benefits:

o Improves delivery;

o Optimizes solutions

o Mitigates quantified risks

Introducing HDR’s CRAVETM

Proven process

Proven results on a wide range of projects, including:

o Bridges

o Highways

o Heavy and light rail alignments

o Ports

o Airports

o Tunnels

o Water treatment facilities

o Pipelines

Won national awards for process

Proven process(2 to 5 Days)

1. Get up to speed

2. ID Baseline Risk & Performance weights

3. Brainstorm Alts

4. Rank (Fatal Flaws)

5. Preferred VE Alt

6. Analyze

7. Final Score / Report

Risk BaselineContingency: Traditional vs. Risk-Based Approach

Environmental

Requirements

30%

Project Base

Cost

Geotech

20%

Materials

40%

Design

5%

Project Base

Cost

Fixed Contingency %

Hone in Actual Risk-Based Contingency

Threat – Something that

increases Risk

Opportunity –Something that decreases Risk

Risk AssessmentThreat vs. Opportunity

Risk Severity and

Occurrence

“How much would cost

impact if ____ happens?”

Risk Assessment

Brainstorming & Ranking

Analysis depends heavily

on traffic!

CRAVETM onTransportation Projects

Mainline Operations

Local Operations

Maintainability

Construction Impacts

Environmental Impacts

Compatibility

Major urban projects

DDI’s, roundabouts, SPUI’s,

Managed Lanes

Lots of weaving

Highly congested corridors with

strange lane utilization

Complex intersections

Long queuing

Possible Transportation Projects Challenges

Versatile “Fast” Perform

System-wide

Evaluations

Balance of

Presentation &

Results

Using VISSIM with CRAVETM

Case Study: US 18 ( Verona Rd), Madison, WIExisting

Case Study: US 18 ( Verona Rd), Madison, WIBaseline Alternative

Grade Separated Interchange

(10-Lane Structure)

Grade Separated Interchange

(4-Lane Structure)

Traditional

At-Grade Separated

Case Study: US 18 ( Verona Rd), Madison, WIBaseline Alternative

10-lanes!

Case Study: US 18 ( Verona Rd), Madison, WIBrainstorming

Typical “Texas-Style” Frontage Rd Ramp Concept

Mainlines

Frontage Rd

Frontage Rd

Cro

ss S

t

Case Study: US 18 ( Verona Rd), Madison, WIBrainstorming

Modified “Texas-Style” Ramp Concept

a.k.a “X-Ramp”Mainlines

Cross Street

Ramps

Frontage Rd

DDI DDI

Case Study: US 18 ( Verona Rd), Madison, WIPreferred Alternative

At-Grade T Intersection

DDI # 1

DDI # 2

Synchro Import

o Basic geometry

o Signals

Calculated Routing decisions for whole

corridor

MOEs for Baseline alt in VISSIM

Coded CRAVE Preferred Alt

o DDI Interchanges

o Frontage Rd

o Raymond Rd

Apples to Apples Comparison

o Still Conceptual Study

o Minimal Calibration needed

Case Study: US 18 ( Verona Rd), Madison, WIModeling Process

Synchro

Vissim

Increased Benefit-Cost

Ratio

Reduced project Cost!

o$14 million dollars

Success!

Case Study: US 18 ( Verona Rd), Madison, WIResults

Synchro

Vissim

Case Study: US 18 ( Verona Rd), Madison, WI

Vissim Model

QUESTIONS?