- The document summarizes the city's engagement with industry groups on pavement standards from 2015-2016. It discusses pavement types, costs, maintenance schedules and lifecycle cost analyses which showed that while concrete pavement has higher initial costs, it has lower long-term maintenance costs, making it more cost-effective over the 30-year lifecycle. - The recommendation is to require minimum rigid concrete pavement standards for residential and collector streets or, alternatively, for collector streets only, due to concrete's lower long-term costs despite higher initial costs.

1. Pavement Standards
City Council Workshop
November 10, 2016

2. Engagement
• September 2, 2015 Texas Asphalt Paving Association
• February 16, 2016 Council Transportation & Mobility Committee
• February 18, 2016 Planning & Zoning Commission
• March 9, 2016 Greater Brazos Valley Builders Association
• March 24, 2016 Texas Asphalt Paving Association / Knife River / AGC
• March 28, 2016 CEMEX / Concrete Pavement Association
• April 5, 2016 Brazos Paving / TexCon
• April 6, 2016 Texas Transportation Institute
• April 12, 2016 Greater Brazos Valley Builders Association
• April 13, 2016 City of Bryan
• April 19, 2016 Council Transportation & Mobility Committee
• June 2, 2016 Texas Asphalt Paving Association Seminar
• June 9, 2016 Council Workshop
• August 9, 2016 Greater Brazos Valley Builders Association
• October 17, 2016 Greater Brazos Valley Builders Association
• October 21, 2016 Larry Young Paving
• November 10, 2016 Council Workshop

3. Summary
• Objective: Reduce street maintenance costs
– June 9th presentation
• Typical pavement types
• Pavement cross-sections
• Existing inventory
• Pavement failures
• Material costs
• Life-cycle costs
– Council directed staff to work with Greater Brazos Valley
Builders Association to review pavement costs

4. Material Costs
September 2015 Estimate
(Provided by GBVBA)
6 inch crushed limestone base $12.94 / SY
8 inch crushed limestone base $16.50 / SY
2 inch HMAC surface course (w/prime) $13.19 / SY
Concrete curb and gutter (all types) $12.54 / LF
6 inch reinforced concrete (w/curb) $37.45 / SY
8 inch reinforced concrete (w/curb) $46.00 / SY

5. Bridgewood Phase 2 (not to scale)
Based on this development phase the approximate additional
cost impact per lot for the change from asphalt to concrete is
$1,400.00

6. Maintenance Costs
Crack/Surface seal HMAC pavement $1.80 / SY
Mill HMAC pavement $3.61 / SY
Remove base $1.00 / SY
Overlay 2 inch HMAC pavement $17.85 / SY
Base failure repair $57.26 / SY
Expansion joint seal PCC pavement $5.00 / LF
Remove concrete curb and gutter $8.42 / LF
Remove PCC pavement $9.38 / SY

7. Maintenance Schedule (30 Year Life Cycle)
Asphalt
Crack / surface seal at 5, and 25 years
Base failure repair (10%) at 10, and 20 years
Mill and overlay at 15 years
Mill asphalt pavement at 30 years
Remove base material at 30 years
Remove concrete curb and gutter at 30 years
Concrete
Expansion joint seal at 10 and 20 years
Remove and replace concrete (10%) at 15 years
Remove concrete pavement at 30 years

8. Life Cycle Costs (Bridgewood Phase 2)
Discounted Net Present
Residential Initial Costs Maintenance Costs
Asphalt $237,000 $234,000 $471,000
Concrete $293,000 $86,000 $379,000
Difference $56,000 ($148,000)
Minor Collector
Asphalt $137,000 $106,000 $242,000
Concrete $183,000 $44,000 $226,000
Difference $46,000 ($62,000)

9. Conclusions
• Initial construction costs for rigid pavement were higher than
flexible pavement
• Maintenance costs for rigid pavement were lower than
flexible pavement
• Life cycle costs for rigid pavement were lower than flexible
pavement

10. Recommendation
1. Require existing rigid pavement minimum standards for residential and
collector streets
– Residential: 6” Reinforced Portland Cement Concrete Pavement
– Minor Collector: 8” Reinforced Portland Cement Concrete Pavement
– Approximate Cost Impact $1,400 / Lot
OR
2. Require existing rigid pavement minimum standards for collector streets
only
– Minor Collector: 8” Reinforced Portland Cement Concrete Pavement
– Approximate Cost Impact $650 / Lot