National Dam Inspection Program Upper Bridgeport Dam NDI I.D. Number PA-00465 Pender I.D. Number 65-6. Ohio River Basin, Jacobs Creek, Westmoreland County, Pennsylvania. Phase I Inspection Report.
Abstract
Upper Bridgeport Dam is an earth embankment approximately 1,020 feet long (including spillways), with a maximum height of 21 feet. The embankment is divided into three sections by two spillways. The service spillway is a combination masonry and concrete trapezoidal-shaped weir structure with a 101-foot long crest located about 140 feet from the left abutment. The emergency spillway is a concrete broad-crested weir structure with a 250-foot crest length located about 320 feet to the left of the right abutment. Based on the visual inspection, operational history, and available engineering data, the dam is considered to be in poor condition. The facility has been essentially abandoned by the current owner and has not been in operation or maintained since 1972. Results of the hydrologic and hydraulic analysis indicate that the facility can accommodate approximately 20 percent of the PMF before overtopping of the embankment occurs. Since the dam's hazard rating is high, and embankment failure would result in an increase in the potential for loss of life downstrean from the dam, the present spillway system is assessed as being seriously inadequate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1979
- Accession Number
- ADA078912
Entities
Organizations
- GAI Consultants, Inc.