| Title | Stream stability at highway structures. |
|---|---|
| Record ID | 47050 |
| Personal Name Creator |
Lagasse, P.F.; Schall, J.D.; Johnson, F.; Richardson, E.V.; Chang, F. |
| Corporate Creator | Ayres Associates; GKY & Associates |
| Publisher | United States. Federal Highway Administration. Office of Technology Applications |
| Publication Date | 19951100 |
| Language | English |
| Abstract | This document provides guidelines for identifying stream instability problems at highway stream crossings and for the selection and design of appropriate countermeasures to mitigate potential damages to bridges and other highway components at stream crossings. It is a metricated update of the version published in 1991 under Contract No. DTFH6 1-89-C-00003. The HEC-20 manual covers geomorphic and hydraulic factors that affect stream stability and provides a step-by-step analysis procedure for evaluating stream stability problems. Guidelines and criteria for selecting countermeasures for stream instability problems are summarized, and the design of three countermeasures (spurs, g uide banks, and check darns) is presented in detail. Conceptual design considerations for many other countermeasures are summarized. |
| Rosap ID | dot:25666 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/25666 |
| TRT Terms | Bridge design; Dams; Spur dikes; Scour; Geomorphology; Streams; Protection against environmental damage; Bridge substructures |
| General Subjects | Bridges--Foundations and piers--Design and construction; Scour at bridges; Streamflow |
| Classification | NTL - HIGHWAY/ROAD TRANSPORTATION - Bridges and Structures; NTL - HIGHWAY/ROAD TRANSPORTATION - Design; NTL - ENERGY AND ENVIRONMENT - ENERGY AND ENVIRONMENT |
| Geographical Coverage |
United States |
| Contract Number | DTFH6 1-93-C-OO I 0 I |
| Report Number | FHWA-IP-90-014; HEC-20 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/47000/47000/47050/FHWA-IP-90-014_Stream_stability_at_highway_structures.pdf |
| Format | |
| Database | NTL Digital Repository |