Engineering Commons^™

Pavement Evaluation, I-265 Jefferson County Mp 15.0-19.0, Brad Rister, R. Clark Graves, David L. Allen

Kentucky Transportation Center Research Report

The Transportation Center conducted a field survey of the pavement conditions located on I-265 in Jefferson County from MP 15.17 to 18.34, in both the eastbound and westbound directions. The existing pavement structure consists of 10″ of PCC pavement and 6″ of DGA. The field survey involved testing the 3.17 mile segment with a Falling Weight Deflectometer (FWD), Ground Penetrating Radar (GPR), and taking core samples of the pavement structure.

Analysis Of Traffic Crash Data In Kentucky (1998 – 2002), Kenneth R. Agent, Jerry G. Pigman, Monica L. Barrett, Eric R. Green

Kentucky Transportation Center Research Report

This report documents an analysis of traffic crash data in Kentucky for the years of 1998 through 2002. A primary objective of this study was to determine average crash statistics for Kentucky highways. Average and critical numbers and rates of crashes were calculated for various types of highways in rural and urban areas. These data can be used in Kentucky’s procedure to identify locations that have abnormal rates or numbers of crashes.

The other primary objective of this study was to provide data that can be used in the preparation of the problem identification portion of Kentucky’s Annual Highway Safety …

Evaluation Of Kentucky’S “Buckle Up Kentucky: It’S The Law & It’S Enforced” Campaign, Kenneth R. Agent, Eric R. Green, Ronald E. Langley

Kentucky Transportation Center Research Report

The objective of this report was to document the results of the “Buckle Up Kentucky: It’s the Law & It’s Enforced” campaign in Kentucky. The campaign involved a combination of earned media, paid media, and enforcement. The earned media started about three weeks prior to Memorial Day 2003 and continued through the enforcement period. The paid media started about two weeks prior to Memorial Day. The enforcement period was a two-week period including the week before and the week of Memorial Day.

The evaluation of the campaign included documenting the activities associated with the program (publicity and enforcement) and evaluating …

2003 Safety Belt Usage Survey In Kentucky, Kenneth R. Agent, Eric R. Green

Kentucky Transportation Center Research Report

The objective of this study was to establish 2003 safety belt and child safety seat usage rates in Kentucky. The 2003 su rvey continues to document the results after enactment of a statewide mandatory safety belt law in 1994 and safety belt enforcement campaign. Data were collect ed at 200 randomly selected sites spread across Kentucky. Data from the individual sites were combined into a statewide percentage considering roadway functional classification, geographic region, and vehicle miles traveled.

The data show that the usage rate in 2003 (65.5 percent) was higher than that in 2002 (62.0 percent). This compared to 61.9 …

Evaluation Of Working Capacity For Disadvantaged Business Enterprises (Dbe) For Highway Construction In Kentucky, Fy 2004 Update, Brad W. Rister, Raymond F. Werkmeister, Paul E. Toussaint

Kentucky Transportation Center Research Report

The Kentucky Transportation Center gathered the appropriate information, performed a series of computations and analyses, prepared the attached documentation, and makes the following recommendations to the Kentucky Transportation Cabinet for their DBE goal for Federal Fiscal year 2004 (October 1, 2003 - September 30, 2004).

KTC recommends an overall DBE goal of 9.26%, of which 1.931% is anticipated to be satisfied by race/gender neutral prime contracts, and the resultant 7.33% should established as race/gender conscious subcontracts. The overall DBE goal figures stated here addresses an adjustment of 1.326% for the positive historical goal variance observed for the past eight years.

The Use And Performance Of Geogrids In Kentucky, Aric Cowne, Richard Reitenour, David L. Allen, R. Clark Graves

Kentucky Transportation Center Research Report

This report will investigate the history and usage of geogrids, a subfamily of geosynthetics, in Kentucky. The American Society for Testing and Materials (ASTM - 1994) has defined a geosynthetic as a planar product manufactured from a polymeric material used with soil, rock, earth, or other geotechnical-related material as an integral part of a civil engineering project, structure, or system. Geogrids, geosynthetics primarily used for reinforcement, are formed by a regular network of tensile elements with apertures of sufficient size to interlock with surrounding fill material. Geogrids are used as reinforcement by adding tensile strength to a soil matrix, thereby …

Abandoned Railroad Corridors In Kentucky: An Inventory And Assessment, Lisa Rainey Brownell, Kentucky Transportation Center

Kentucky Transportation Center Research Report

This report provides an inventory of Kentucky's abandoned rail lines and a detailed assessment to highlight the lines that may be the most suitable for future trail use. A secondary purpose of the report was to inventory historic railroad structures. Over 125 different abandoned rail lines were identified, mapped using GIS technology, and assessed for their current use and condition. These abandoned rights of way exist in all regions of the state, in urban and rural areas.

Traffic Control At Stop Sign Approaches, Kenneth R. Agent

Kentucky Transportation Center Research Report

The objectives of this report were to: a) determine the number of crashes in Kentucky involving a driver disregarding a stop sign and the locations where these occur, b) determine the characteristics of these crashes, c) investigate loca tions with a large number of this type of crash, and d) make recommendations to reduce the probability of a driver disregarding a stop sign. The majority of the analyses involved a review and analysis of crashes where a stop sign was listed as the traffic control and “disregarding the tra ffic control” was listed as a contributing factor. Intersections having a …

Investigation Of Soluble Salts On Kentucky Bridges, Sudhir Palle, Rick Younce, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

Invisible soluble salts present on steel highway structures can act to promote corrosion even after maintenance painting. Soluble salts include chloride, nitrate and sulfate ions. Soluble salts found on bridge decks and roadways are the result of usage of deicing salts (chlorides), and the deposition of atmospheric pollution (nitrates and sulfates) on exterior surfaces. Typical pollution-related sources of soluble salts are coal-fired power plants, refineries, farming operations, vehicle emissions, and chemical plants. Sites for soluble salt damage on bridges include:

• Beam ends under open or leaking expansion joints,
• Flanges and lower portions of webs of overpass structures,
• Lower chords and …