Pavement Management Program
Pavement Management is the process of managing the life cycle of roadways to maximize the pavement life and to minimize the maintenance costs. This process inventories the streets into maintainable segments followed by a survey to determine the surface condition and rideability. This process helps determine what maintenance practices should be used based on the pavement condition to help maximize the life of the roadway.
As the City of New Braunfels continues to grow, the number of miles added to the city’s roadway system also continues to expand. There was a need to better manage the city’s pavement and in 2015 the City of New Braunfels embarked on improving the pavement management program including updating pavement scores and implementing new software.
Each city street was evaluated and an Overall Condition Index (OCI) was assigned to each street segment. The OCI considers the smoothness of the roadways and cracks, rutting, utility cuts and potholes in the pavement surface. A street with an OCI of 99 is in excellent condition and needs no repair or treatment. Usually an OCI of 19 or less indicates pavement and road base failure, and a reconstruction is required. Estimated OCI scores and ratings are listed in the following table.
ESTIMATED OCI SCORES
80 – 99
60 – 79
40 – 59
20 – 39
0 – 19
The OCI was used as input into the city’s pavement management software program and each year this program systematically reduces these scores due to weather, age and traffic, creating the estimated OCI scores. When preventive maintenance is completed on any particular roadway each year, the score on these roadways will be adjusted.
The estimated OCI scores will be used to enable the city to prepare a list of roadways for the “preventive maintenance” budget each year. The preventive maintenance budget will consist of work like crack sealing, pothole repairs, base repairs, chip seals, limited overlays, mill and overlays and rehabilitation/reconstruction of roadways.
Estimated Overall Condition Index Web Maps
The web maps listed below show the “Estimated OCI Scores” of each city street and area. Private streets and streets on the TxDOT’s system are not given a score.
2022 Street Maintenance Program
The links below provide additional information on the 2022 Street Improvement Program. Please note that adjustments to the program may be necessary due to utility coordination and other factors.
Types of Preventative Maintenance Work
- Crack Sealing: This work consists of cleaning and sealing the cracks in the pavement with an asphalt sealant to prevent moisture from entering into the flexible base and/or subgrade material. This is the least expensive form of preventive maintenance and typically looks like an “asphalt” spider web placed on the pavement.
- Pothole Repairs: This work consists of removing loose material from a small, shallow repair area, applying tack coat to surfaces of these areas, placing the repair material to grade and compacting to conform to the existing roadway surface using mechanical tampers or rollers to achieve full consolidation.
- Base Repairs: Since these repairs are much larger and deeper than potholes, this work consists of saw-cutting the repair area and removing the loose, existing asphalt pavement and base material. Once the loose material is cleaned-out, tack coat is applied to surfaces of the repair area and the new material is placed in lifts of no more than 4” deep. The repairs are finished to grade and compacted to conform to the existing roadway surface using rollers. This work is done to repair areas to extend the life of the roadway.
- Blade Level-up: This work consists of the placement of a thin layer of asphalt pavement to fill-in areas of the pavement that hold water due to the shifting subgrade. Since standing water can be detrimental to a pavement section over time, it is good to make sure water drains properly.
- Chip Seals and Limited Overlays: A chip seal consists of spraying a thin layer of asphalt over the pavement followed by applying a thin layer of small aggregate. Once this is done, a thin hot-mix asphalt pavement overlay (approximately 1” thick) is placed over the chip seal. This is done to waterproof the existing street surface and to increase skid resistance and life of the pavement section.
- Mill and Overlays: This work consists milling 2” or 3” of the existing pavement section and placing a single layer of hot-mix asphalt pavement which is used to restore the street to its original shape and ride.
- Rehabilitation/Reconstruction of Roadways: When the existing pavement has deteriorated to the point it cannot be repaired or the subgrade has shifted and is now holding water, we have to rehab or reconstruct it. This work consists of reconstructing the entire roadway section, replacing sections of concrete curb and fixing the drainage issues so water drains properly.