BFS Temporary Bridge Presentation.pptx - Read-Only › indot › files › Temporary Bridge for...
18
Temporary Bridges for MOT 2/14/2019 1 Temporary Bridges Utilizing a Temporary Structure for MOT and Value Engineering February 14 th , 2019 Presentation Goals • 1.) Specific Scenarios • 2.) Types of Temporary Structures • 3.) Advantages • 4.) Plans & Specs • 5.) Manufacturers • 6.) Case Studies 1 2
Transcript of BFS Temporary Bridge Presentation.pptx - Read-Only › indot › files › Temporary Bridge for...
Temporary Bridges for MOT 2/14/2019
1
Temporary Bridges
Utilizing a Temporary Structure for MOT and Value Engineering
February 14th, 2019
Presentation Goals
• 1.) Specific Scenarios
• 2.) Types of Temporary Structures
• 3.) Advantages
• 4.) Plans & Specs
• 5.) Manufacturers
• 6.) Case Studies
1
2
Temporary Bridges for MOT 2/14/2019
2
The Policy…
• I‐65: 248 miles
• I‐69: 136 miles
• I‐70: 153 miles
• I‐74: 69 miles
• I‐94: 40 miles
• I‐465: 60 miles
Total = 706 miles
So what does this mean?
3 and 1 Phasing
3
4
Temporary Bridges for MOT 2/14/2019
3
So what does this mean?
2 Lane Options
$
Our Main Goal
What happens when we reduce phases
5
6
Temporary Bridges for MOT 2/14/2019
4
40-50 Degrees and Raining Most Days
Types of Temporary Bridges
Ohio River at Flood Stage
Types of Temporary Bridges
7
8
Temporary Bridges for MOT 2/14/2019
5
Types of Temporary Bridges
Types of Temporary Bridges
9
10
Temporary Bridges for MOT 2/14/2019
6
What to Show on Plans
The Basic
Temporary Bridge
11
12
Temporary Bridges for MOT 2/14/2019
7
Maybe Overkill
What Should we have?
1.) Loads
2.) Spans
13
14
Temporary Bridges for MOT 2/14/2019
8
Who are Making These Bridges?
*
The Spec Pitfalls
15
16
Temporary Bridges for MOT 2/14/2019
9
US 41 Case Study
US 41 Case Study
17
18
Temporary Bridges for MOT 2/14/2019
10
US 41 Case StudyDelivery: August 23rd, 2017First Push: September 5th, 2017Final Push: September 18th, 2017Final Position: September 29th, 2017Ready for Traffic: October 12th, 2017
I‐70 over Flatrock
1.) Superstructure Replacement
2.) 2 lanes required open at all times
3.) Temp bridge 1 lump sum
4.) No substructure
19
20
Temporary Bridges for MOT 2/14/2019
11
I‐70 over Flatrock
170’-0”
We can Span That!
21
22
Temporary Bridges for MOT 2/14/2019
12
Wetlands
Bad SoilSeismic Zone 2
We can Span That!
We can Span That!
23
24
Temporary Bridges for MOT 2/14/2019
13
I‐70 Time Lapse Video
Final Numbers
• Total rental time = 7 months
• Rental cost = $750,000
• Time to install temp bridge: 2 months
• Bridge returned late November
25
26
Temporary Bridges for MOT 2/14/2019
14
US 50 over Jackson Creek
7,229 sft MSE wall in rock
The Comparison
• 1 span 89’‐9”
• 4, 42” x 49” HYBT or
• 4, 36” plate girders
• Replace small structure first in late 2017
• MSE Walls
• 1 span 153’‐0”
• 4, 84” x 49” HYBT
• Replace small structure and main structure in same season
• Spill through
Total Cost Savings: $400,000Total Runaround Cost: $900,000
27
28
Temporary Bridges for MOT 2/14/2019
15
The Temporary Bridge
The Temporary Bridge
29
30
Temporary Bridges for MOT 2/14/2019
16
The Temporary Bridge
The Temporary Bridge
31
32
Temporary Bridges for MOT 2/14/2019
17
The Temporary Bridge
A Whole Lot of Concrete
33
34
Temporary Bridges for MOT 2/14/2019
18
What do we gain in the end
• Improved Workmanship
• Enhanced safety
• Shorter construction durations
• Cost savings
• Larger work zones
Any Questions?
35
36
