Timber Bridge Decks
The portion of the nation's 500,000 bridge decks that are made of timber has been declining for years, as the old timber ones on secondary road bridges are rebuilt, in most...
New Pavement from Old Concrete
Recycling portland cement concrete has gained momentum as an alternative to resurfacing aging highway and airfield pavements. Recycling cuts down rawmaterial requirements, reduces the...
Optimizing Nonpoint Source Pollution Reduction Costs
This study demonstrates diminishing marginal returns for spending to reduce nonpoint source pollution in Hampton, Virginia. A linear optimization program selected the best combination...
Fishery Mitigation in an Estuarine Environment
This paper summarizes the major features of the estuarine mitigation plan proposed by New York State Department of Transportation in conjunction with the interstate highway project known...
LAX Engineers Beat the Clock
Foreign and domestic crowds flying in for the Olympics were no problem for the Los Angeles Airport (LAX), thanks to the expansion and improvements completed a month earlier. LAX more than...
Bridging Twin Ports
The Major Richard I. Bong Memorial Bridge, part of U. S. Highway 2, connects harbors at Duluth, Minn. and Superior, Wisc. The new highway link was designed to relieve congestion on nearby...
Microcomputers in Highway Drainage Design
This paper discusses some of the benefits and uses of microcomputers in highway drainage design and discusses the programs presently being developed. Subjects covered include hydrologic...
Investigation of Design Criteria for APM Guideways
Designers have relied mostly on the provisions of the American Association of State Highway and Transportation Officials (AASHTO) Standard Specifications for Highway Bridges. Sometimes...
Drainage Tunnels Save Freeway Link
A 15 mile section through downtown Phoenix will complete Interstate 10. After years of delay, the project is now close to completion. The project required construction of 6.5 miles of...
Inspection Costs Versus the Benefits Derived
The following text describes the experiences of a small suburban municipality located in Middle Tennessee before, during and after a five-year program of comprehensive inspection and testing...
Managing Federal Aid Using Microcomputers
Wisconsin's federal aid for highway improvement is about 225,000,000 annually. The obligation authority (the ability to spend the federal aid) is limited to an estimated 162,000,000...
The Economic Analysis of Highway Improvements
The design and operation of a microcomputer program to perform an economic analysis on highway improvements is described. The economic analysis methodology used in developing the program...
POSIT?An Interactive Timing Optimization Program
A window-oriented, microcomputer-based signal optimization program called POSIT (Program for Optimizing Signalized Intersection Timing) has been developed that provides traffic engineers...
A Microcomputer Based Street Inventory System
Maintaining a Roadway Inventory Management System, or any inventory system, is an ongoing problem for many agencies. The filing cabinet system is clumsy and time consuming. Mainframe computer...
Evaluation of Before and After Traffic Conditions
A microcomputer program to evaluate the before and after traffic conditions of a highway project is described. An overview of the evaluation methodology used in the design of the program...
A Freeway Simulation Program for Microcomputers
An interactive, menu driven macroscopic freeway simulation program with graphic capabilities is presented in this paper. In addition to the employment of personal computers the program...
Development of Micro Programs for the New HCM
The Highway Capacity Manual (HCM) is one of the most basic references in highway and traffic engineering. The first edition was published in 1950, in response to a need for consistent...
A Microcomputer-Based Safety Management System
An agency's effectiveness in undertaking its highway safety responsibilities is most critically dependent upon the information available and the means provided to access and...
Downloading Accident Data for Local Agency Use
This project was funded by a grant from Van Buren County Road Commission in cooperation with the Michigan Office of Highway Safety Planning and the U. S. Department of Transportation,...
Evaluation of Accident Countermeasure Viability
Traffic and safety engineers are faced with the on-going challenge of maintaining acceptable levels of safety on the roads and streets under their jurisdictions. Generally, this challenge...
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