Bridges
TxDOT Lufkin District SH 19 Bridge over the Trinity River, Lufkin, Texas
Klotz Associates prepared the plans, specifications and construction cost estimates for this project. The project included the bridge layouts and details for a 2,800-foot bridge replacement over the Trinity River and a 1,000-foot bridge replacement over the relief channel. The design included an evaluation of alternate alignments for the main crossing and the relief bridge. Klotz Associates provided the drainage study including a HEC-RAS analysis of the structures for the bridge replacements. A scour analysis for long term aggradation and degradation, contraction scour and local scour (pier and abutment) was also necessary for this major bridge facility. Klotz Associates prepared a roadway schematic for two miles of divided highway reconstruction including the drainage for the roadway.
HCTRA Segment 20 of the Southeast Harris County Toll Road, Houston, Texas
Klotz Associates designed 4,000 linear feet of main lane facilities including two prestressed concrete beam bridges, Telephone Road Bridge, and drainage facility structures. Klotz Associates also prepared plans and specifications.
Williamson County O'Connor Drive Extension and Bridge Design
The O’Connor Boulevard additional services project called for design a $2.6 Million bridge over Lake Creek. Klotz Associates was asked to design the bridge for the County to eliminate the need for a USACE permit. The bridge is part of the overall O’Connor Blvd project which is a new four-lane roadway from RM 620 to SH 45 in northwest Austin. The overall cost of the new road and bridge is about $7 Million. The project is under construction.
Kendall County Herff Road Widening and Reconstruction Project
The Kendall County Commissioners Court has just selected Klotz Associates to provide engineering services for this project to realign, widen and reconstruct this existing 1.3 mile two-lane rural roadway in Kendall County Precinct two-lane to a four-lane divided roadway with 45 mph design speed with traffic signal warrants/design, widening of a bridge over Cibolo Creek and a new span bridge over Menger Creek.
City of Cedar Park RM 1431 Widening and Reconstruction
lOn April 28, 2011 the City of Cedar Park City Council selected Klotz Associates to provide engineering services for this project to prepare Plans, Specifications and Estimates to widen and reconstruct this existing two- mile roadway from Parmer Lane / Ronald Reagan Blvd to Sam Bass Road to a six- lane major arterial roadway with raised median, traffic signal improvements, illumination improvements, widening of bridges over two creeks and other related improvements. The project also includes obtaining environmental approvals for the section being designed and a second section designed separately.
Harris County Sims Bayou Channel Improvement and Bridge Reconstruction Project
Klotz Associates was involved in the reconstruction of five bridges which crossed Sims Bayou in Harris County. The project was completed in concert with the widening of Sims Bayou by the Corps with the objective of keeping the 100 year event in the Bayou Channel. The reconstruction of the bridges required hydrologic and hydraulic models for the channel to confirm that the new bridges would be out of the 100-year event. bridges would be out of the 100-year event. Alternative analysis and cost estimates were prepared before the final bridge design was selected. Particular attention was given to erosion control and coordination with local neighborhood associations. The project team provided hydrologic and hydraulic analysis, channel and bridge design services, modeling and flow analysis of the channel, text, tables, cost estimates, exhibits, computer models, CD with all the data, and a report with recommendations. Additionally, Klotz Associates provided construction-phase services throughout the entire project.
Ft. Bend Parkway
Klotz Associates designed two direct connector bridge structures that
connect US90A to Fort Bend Parkway. The two bridge structures are 1,806
and 2,138 feet long, respectively. The NB-EB structure consists of
16 bents that include 5 inverted T-straddle bents with post tensioning.
It also includes a 712-foot, 4-span continuous curved steel girder
system with prestressed concrete Type IV approach spans. The steel
web sections are 94 inches on the outside girder and 74 inches on the
inside girder. All the other bents are single-column hammerhead bents
with inverted T caps. Hammerhead bents were built on top of a tie footing
that connected to two 72-inch drilled shafts. Two of the hammerhead
bents were supported by four 72-inch drilled shafts due to the loading
and soil conditions.
TxDOT Bridge Inspection Program
The Texas Department of Transportation (TxDOT) Bridge Inspection Program (BRINSAP) is the state’s response to a federally mandated program to inspect bridges and assess their safety for the traveling public within the State of Texas. TxDOT executes 2-year contracts with engineering firms that provide routine bridge inspections within TxDOT districts. Klotz Associates has provided inspection and appraisal services to the BRINSAP program for 12 years. During that time, the firm’s professionals have inspected more than 10,000 bridges statewide. These have included single- and multi-span concrete, timber, and steel bridges in locations as diverse as high-traffic, interstate highways in dense urban areas such as Houston, Dallas, and San Antonio as well as bridges on rural farm-to-market and unpaved county roads. This project has involved the participation of all Klotz Associates offices.
