CASE STUDY RESEARCH PAPER- REPORT ( 48 Hours - A+ Score Required)
jhayes
3.CONE-Presentation.pptxFinal Case Study
Melissa Hamendi
Professor Hossein Hemati
CON E 330
December 7th, 2018
The Louisiana Department of Transportation developed feasibility analysis for upgrading 6 miles of US-167 South starting at the intersection with US-80 (California Avenue)
.An existing two-lane highway between is to be converted to a four-lane divided freeway.
average 25,000 vehicles per day over the next 20 years.
Truck volumes represent 6.25% of the total traffic.
Annual maintenance on the existing high- way is $1875 per lane mile.
The existing accident rate is 5.725 per million vehicle miles (MVM).
Capital improvement investment money can be secured at 6.25%
Summary
Objective of The Project
Choosing the best plan to upgrade the 6 miles segment of US-167 South to reduce traffic and promote safety.
The following data will be helpful in calculating and weighting each one of the alternatives:
• Operating cost-autos: 15¢ per mile
• Operating cost-trucks: 22.5¢ per mile
• Time saving-autos: 3.75¢ per vehicle minute
• Time saving-trucks: 18.75¢ per vehicle minute
• Average accident cost: $1500
Alternatives
Analysis
Evaluation
Plan 1: Adding Two Adjacent Lanes
Total cost: $562,500(6 mile) = $3,375,000
Annual capital cost: $3,375,000()=$300,248
Operating cost of auto: (6 miles) ($)(365 day) = $329
Operating cost of truck: (6 miles) ($)(365 day) = $493
Annual cost savings in auto: (23,437 vehicles) ($)(2.5 min) (365 day) =$801,985
Annual cost savings in truck: (1563 vehicles) ($)(1.25 min) (365 day) = $133,710
If Plan 1 is performed, maintenance cost will be $1,560
Annual maintenance cost: ($1,560) (4 lanes) (6 miles) = $37,440
Annual savings in maintenance cost: ($1,875 - $1,560) (4 lanes) (6 miles) = $7,560
Annual savings in accident reduction: (5.725 – 3.125) ($1,500) ($)=$213,525
Total annual cost: $300,248+ $329+$493+$37,440 = $338,510
Total annual benefit: $801,985+$133,710+$7,560+$213,525 = $1,156,780
Benefit to cost ratio : = 3.417
Evaluation
Plan 2: Adding Two Adjacent Lanes and Make Grade Improvements
Total cost: $812,500(6 mile) = $4,875,000
Annual capital cost: $4,875,000()=$433,691
Operating cost of auto: (6 miles) ($)(365 day) = $329
Operating cost of truck: (6 miles) ($)(365 day) = $493
Annual cost savings in auto: (23,437 vehicles) ($)(3.75 min) (365 day) =$1,203,003
Annual cost savings in truck: (1563 vehicles) ($)(3.75 min) (365 day) = $401,001
If Plan 2 is performed, maintenance cost will be $1,250
Annual maintenance cost: ($1,250) (4 lanes) (6 miles) = $30,000
Annual savings in maintenance cost: ($1,875 - $1,250) (4 lanes) (6 miles) = $15,000
Annual savings in accident reduction: (5.725 – 3.10) ($1,500) ($)=$215,578
Total annual cost: $433,691+ $329+$493+$30,000 = $464,513
Total annual benefit: $1,203,003+$401,001+$15,000+$215,578= $1,834,582
Benefit to cost ratio : = 3.949
Evaluation
Plan 3: Construct A New Freeway on New Alignment
Total cost: $1,000,000(6.5 mile) = $6,500,000
Annual capital cost: $6,500,000()=$578,255
Operating cost of auto: (6.5 miles) ($)(365 day) = $356
Operating cost of truck: (6.5 miles) ($)(365 day) = $534
Annual cost savings in auto: (23,437 vehicles) ($)(6.25 min) (365 day) =$2,005,005
Annual cost savings in truck: (1563 vehicles) ($)(5 min) (365 day) = $534,668
If Plan 3 is performed, maintenance cost will be $1,250
Annual maintenance cost: ($1,250) (4 lanes) (6.5 miles) = $32,500
Annual savings in maintenance cost: ($1,875 - $1,250) (4 lanes) (6.5 miles) = $16,250
Annual savings in accident reduction: (5.725 – 3.00) ($1,500) ($)=$242,440
Total annual cost: $578,255+$356+$534+$32,500= $611,644
Total annual benefit: $2,005,005+$534,668+$16,250+$242,440= $2,798,363
Benefit to cost ratio : = 4.575
Plan 3 is the best alternative.
Plan 1 Plan 2 Plan3
Cost per mile $562,500 $812,500 $1,000,000
Reduction in auto
travel time
(minutes)
2.5 3.75 6.25
Reduction in truck
travel time
(minutes)
1.2 3.75 5
Reduction in
accident rate (per
MVM)
3.125 3.10 3.00
Annual
maintenance (per
line male)
$1560 $1250 $1250
Additional notes
0.5 miles longer
than others
No salvage value
Alternatives
Assumptions
Objectives
Comparison
Benefit/cost
