As prime consultant, Kleinfelder is providing the advance planning study, project report, type selection report, and final design services for the replacement of the low water crossing of the Santa Maria Creek with a new 480-foot-long, 73-foot-wide bridge. The project is located in the unincorporated community of Ramona in San Diego County and is funded by the Highway Bridge Program.
This project will create an all-weather crossing of the Santa Maria Creek. It requires the approaches on both sides of the proposed bridge to be widened, realigned, and raised to provide one foot of freeboard during the 100-year storm event and to minimize impacts to surrounding businesses.
The new 13th Street Bridge is anticipated to be a four-span cast-in-place pre-stressed concrete box girder bridge supported on multi-column bents and seat type abutments, founded on Cast-in-Drilled-Hole concrete piles. The bridge will accommodate a 10-foot multi-use trail on the east side and a six-foot sidewalk on the west side. The multi-use trail will be separated from traffic with an interior concrete barrier. The bridge will be designed to address the stream bed scour and liquefaction inherent to the project site.
The bridge is anticipated to incorporate visual elements that include protective ornamental railing to provide the required barrier for equestrian use, integral colored concrete to reduce the visual impact of the structure, and Type 80 and Type 80 SW concrete barriers that provide an open feeling for individuals using the bridge.