Scoping for Performance-Based Solutions; I-35W @ CR E2 ACEC Conference March 5, 2012 Tom O’Keefe Metro District Program Delivery

Problem Scenario The sizes of bridges today are an average six times the size of its predecessor… Federal Bridge Inventory Report Innovative solutions to bridge the gap Transportation Demand Transportation Funding In 2010, Twin Cities was ranked 10th most congested city in the nation. (according to 2011 Urban Mobility Report) In 2010, Twin Cities was ranked 10th most congested city in the nation... 2011 Urban Mobility Report

Age Profile and Investment Strategy of State Highway Bridges Overview Based on 2009 MnDOT Bridge Report 10.9% to 19.6% Replace (501+395=896) 58.4% Improve (2,675) 30.2% Preventive Maintenance (1,383) Age Profile and Investment Strategy of State Highway Bridges

We are competing with the world for our message.

We are competing with the world for our message.

Superstructure Rating – 4 Substructure Rating – 5 Existing Bridge Constructed in 1964 Chapter 152 Bridge Superstructure Rating – 4 Substructure Rating – 5 Vertical Clearance – 14.8’ Sufficiency Rating – 52 Structurally Deficient All beams over SB 35W have repair patches from several high load hits, South fascia has some severed tendons

Traffic Volumes West Side ADT East Side ADT 2010 – 10,600 2008 – 10,100 2006 – 10,900 2004 – 14,000 2002 – 9,600 2000 – 9,600 2010 – 6200 2008 – 5650 2006 – 5720 2004 – 7000 2002 – 7600 2000 – 7600 We are competing with the world for our message.

Existing Delay West Junction East Junction am LOS B (12 seconds delay) pm LOS C (21 seconds delay) East Junction am LOS B (13 seconds delay) We are competing with the world for our message.

Future Delay 10% Growth 20% Growth West Junction East Junction am LOS B (14 seconds delay) pm LOS D (34 seconds delay) East Junction am LOS C (15 seconds delay) pm LOS D (33 seconds delay) West Junction am LOS C (16 seconds delay) pm LOS F (69 seconds delay) East Junction am LOS C (19 seconds delay) pm LOS F (64 seconds delay) We are competing with the world for our message.

Crash History West Ramp East Ramp Statewide Rank - #2320 Crash Cost - $51,000 Crash Rate – 0.36 Severity Rate – 0.42 Statewide Rank - #2699 Crash Cost - $8,000 Crash Rate – 0.14 Severity Rate – 0.14 How many intersections are there statewide – Over 8000 intersections statewide Metro Average crash cost is $109,000 Average CR for metro area is 0.4 for all way stop Average SR for metro area is 0.5 for all way stop

Existing E2 Bridge Section

Proposed E2 Bridge Section We are competing with the world for our message.

Section Under E2 Bridge 30’ Clear Zone

Section Under E2 Bridge 16’ Clear Zone

Tradeoffs for I35W Section Bridge cost increase for 30’ clear zone Bridge Maintenance Cost incr. for 30’ clear zone Guardrail cost @ 16’ Annualized Guardrail Repair cost @ 16’ Annualized Guardrail Snow & Ice cost @ 16’ Operating funds vs. Construction funds