Blade and Oil – (for un-paved roads)

A motor-grader with a large scraping blade is used to shape the road-base material. Then an application of asphaltic emulsion oil is applied to seal and stabilize the road. The oil used is very different from that used in automobiles and has properties such that it is non-harmful to the environment.

Crack Sealing

An asphalt sealing product is applied to the cracks in paved roads to prevent the moisture from penetrating into the base and subgrade material. This promotes the life of the road.

Level-up

Asphaltic level-up material is added to minor depressions and areas with surface roughness before resurfacing with a sealcoat or overlay.

Surface Replacement

Replacement of the top 2 or 3 inches of the road, if there are no noticeable base or subgrade failures, but the existing HMAC surface is exhibiting extensive cracking, roughness, or surface rutting.

Full-Depth Repair

Replacement of the base and surface layers, typically to a depth of 10 to 18 inches. This type of treatment repairs localized pavement failures to a condition equal to or better than the surrounding pavement material.

Sealcoat (general description)

A preventive maintenance application of thin asphalt emulsion surface treatment covered with aggregate, used to waterproof and seal the existing road surface and to increase skid resistance. Sealcoat treatments typically include some crack sealing and level-up.

Seal IIA

Application of a single course chip seal. The typical cost in-house crews is $10,000 per mile.

Seal IIB

Application of a two course chip seal. The typical cost using in-house crews is $17,000 per mile.

Seal IIC

Application of a single course of trap rock. The typical cost using in-house crews is $12,000 per mile.

Seal IID

First the surface receives a grade and oil treatment. Then a two course chip seal is applied to the road. The typical cost using in-house crews is $29,000 per mile.

Type-F Overlay

Application of an asphaltic concrete pavement (ACP) about ¾ inch thick. Type-F Overlays are typically used in residential local classification roads where a very smooth riding surface is desired. Type-F Overlays typically cost $25,000 per mile.

Type-C Overlay

Application of an asphaltic concrete pavement (ACP) about 1½ to 2 inches thick. It is used to level, waterproof, and restore the original road shape and ride. Type-C Overlays provide some increase in the structural value of the pavement section and therefore the life cycle of the road. Type-C Overlays typically cost $42,000 per mile.

Overlay IVA

Another term used for Type-C Overlay, typical cost $42,000 per mile.

Spot Reconstruction

The existing surface materials are recycled in-place, injected with oil to a depth of 6 inches, and covered with a two course chip seal (Seal IIB). The typical cost of spot reconstruction using in-house crews is $200,000 per mile. Contracted out work can cost $250,000 to $350,000 per mile.

Reconstruction R2

The existing pavement materials are removed and discarded. The subgrade is stabilized to a depth of 12 inches, flexible base is applied 8 to 12 inches thick, then covered with HMAC to depth of 2 to 4 inches. The typical cost using contracted out work is $400,000 to $500,000 per mile.

Reconstruction R1

The existing pavement materials are removed and discarded. The subgrade is stabilized to a depth of 12 inches, flexible base is applied 12 to 24 inches thick, then covered with HMAC to depth of 2 to 4 inches. Construction may include the use of Geotextile materials. The typical cost using contracted out work is $400,000 to $500,000 per mile.

Complete Road Reconstruction

All of the needs in the right-of-way are addressed, which can consist of replacing sections of curb and gutter, driveway aprons, drainage system improvements, sidewalks, ramps, and complete pavement section replacement. This is a traditional CIP road and drainage improvement project. It can incorporate moderate changes to the road alignment, profile, cross section, and roadway width. The typical cost can range from $750,000 to over $1M per mile.

New Road Construction

This category consists of constructing new road sections in accordance with long-range transportation plans. It includes new curb and gutter, driveway aprons, drainage systems, sidewalks and ramps, traffic signals, signs, markings, and may require new bridge structures. New alignments typically require the purchase of right-of-way (ROW), which can have a huge impact on the project cost. This is a traditional CIP street network capacity expansion project. Effective project costs with bridges, ROW, business relocations, and condemnation settlements can easily range to well over $1M per mile.

 

700 lavaca

TNR - Public Works

Phone: (512) 854-9383
Fax: (512) 854-4626

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After Hours Emergency (Sheriff's Office): (512)974-0845

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