Alignment of Large Flood-Peaks on Arid Watersheds
Bridge and culvert design requires estimates for 25- to 100-year return period flood peaks (Q). Floodplain delineation calls for 500-year (Q500) estimates. Arid western flood series are...
Optimal Design of Highway Drainage Structures
Hydraulic design of a bridge or culvert using a risk-based approach is to choose among the alternatives the one associated with the least total expected cost. In this paper, the risk-based...
Hydraulic and Scour Analysis for Muitiple Crossings of the Salt River, Phoenix, Arizona
Two new freeway systems currently being designed for the Phoenix metropolitan area, the East Papago Freeway and the Outer Loop Highway, will both cross the Salt River within a one mile...
Critical Flow Through Bridge Piers
A physical model study was performed at California State University, Long Beach to investigate the location of critical depth within bridge piers in supercritical lined channels. This...
Microcomputer Applications in Transportation III
This proceedings consists of papers presented at the International Conference on Microcomputers in Transportation which was held on June 21-23, 1989 in San Francisco, California. They...
The Stacked Drift Tunnel
The Mount Baker Ridge Tunnel is the first of its kind and the last: a forward thrust of technology and a look back to the flow of federal highway funds, which paid 90% of its cost. The...
Top Projects 1990
A dam, a bridge, an expressway, an interchange, flood control improvements, wastewater treatment and a dredged material containment embankment round out the 1990 Outstanding Civil Engineering...
Asphalt in the U.S. Transportation Infrastructure
Asphalt has been the major pavement material responsible for development of the transportation infrastructure enjoyed by American citizens. This paper addresses issues to be monitored...
Large Stone Hot Mix Asphalt: State of the Art
Improved mix characteristics can be achieved by utilizing existing well-known technologies. Developments have included: more attention to voids in mineral aggregate criteria; adjusting...
Large Stone Mixes Make a Comeback
Large stone hot mix asphalt common at the turn of the century, is making a comeback in popularity in hot mix asphalt design. Large stone hot asphalt mixtures are being used as a way to...
Decayed Timber Bridge Microcomputer Rating Program
National Bridge Inspection Standards (NBIS) require that capacity ratings for each bridge structure be established. This requirement includes timber bridges which are often decayed, have...
SHRP Program: Asphalt Durability and Specification
The goals of the Strategic Highway Research Program (SHRP) program are an improved specification for asphalt binders and accelerated performance tests that can be employed by user agencies...
Use of Geogrids on Soft Deposits
The construction of highway embankments over soft and waste deposits required the use of geogrids as an economical alternate to conventional methods of 'remove and replace'....
Sawn Lumber in Bridge Construction
This paper covers many aspects of design and construction that affect the specifications of the sawn wood components of a highway bridge. The relationships between the grading rules for...
Glued Laminated Timber for Bridge Construction
Structural glued laminated timber (glulam) was first introduced into the U.S. as a construction material in 1934. With the development of fully waterproof adhesives in the 1940's,...
Structural Wood Composites in Bridge Construction
Wood composites, known collectively as Structural Composite Lumber (SCL), are a family of wood-based products that better utilize the available wood fiber of a tree. This paper describes...
Applications of Wood Materials for Innovative Bridge Systems
This paper describes completed research and the status of research underway on timber bridges that are part of the USDA Forest Service timber bridge initiative. The initiative includes...
Asphalt Cement Specifications and HMA Performance
The standard specifications generally used for hot mix asphalt (HMA) are those published by the American Society for Testing and Materials (ASTM) or the American Association of State Highway...
70 Year Performance Record for High Strength Structural Lightweight Concrete
The paper briefly discusses the first ship built using expanded aggregates manufactured in a rotary kiln the USS Selma. It then goes on to discuss achieving high strength concrete with...
Montana's Approach to Reduce Asphalt Pavement Rutting
The Montana Department of Highways experienced premature rutting in some asphalt concrete pavements primarily on the east-west interstate in Eastern Montana. Montana participated with...
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