TPD’s Post

I have invested significant time studying the Design Manual for Roads and Bridges (DMRB) with a particular focus on highway structures and bridges design (CD 350). I am seeking clarity on the structural standards outlined in this document. #cpd

The 2024 AASHTO (American Association of State Highway and Transportation Officials) Committee on Bridges and Structures (COBS) annual meeting in Indianapolis was a success! Our National Practice Team Manager of Structural Engineering, Bill DuVall, and Senior Bridge Engineer, Randall B. Mullins PE, had the opportunity to engage with industry leaders about the latest advancements in bridge design and construction. COBS plays a pivotal role in advancing bridge and structural engineering by establishing guidelines, standards, and best practices for the design, construction, and maintenance of various transportation-related structures. Responsible for the development and maintenance of the AASHTO Load and Resistance Factor Design (LRFD) Bridge Design Specifications, COBS ensures that these critical documents set the basis of design using state-of-the-art practices. COBS also champions research and the integration of new technologies and materials, promoting innovation that enhances the safety, reliability, and longevity of our infrastructure. Their standards often serve as the foundation for state and federal regulations, ensuring widespread adoption and impact. Through the promotion of cutting-edge materials, technologies, and methods, COBS continues to drive progress in the field of bridge engineering, setting the stage for a safer, more resilient future. #Engineering #BridgeDesign #StructuralEngineering #AASHTO #Innovation #Safety

👓 VISIBILITY is a cornerstone of HIGHWAY SAFETY! 🚗 It directly impacts driver decisions and response times. Optimal visibility not only enhances safety but also enhances the comfort and efficiency of road users, facilitating smoother traffic flow and mitigating congestion. In the UK, comprehensive guidance documents govern highway design, prominently among them the Design Manual for Roads and Bridges (DMRB) and the Manual for Streets (MfS). The choice between these guidelines typically hinges on road speed. In this article we look at VISIBILITY in terms of Highway Design Services and we explore when to use the DMRB or the MfS guidelines. We also highlight key parameters like Stop Sight Distance (SSD) and its significance. 💻 Ready to learn more? Why not read the full article on our website: https://lnkd.in/ezueXFSe #Civilistix #civilengineering #highwaydesign #knowledgesharing Civilistix promoting Constructive Conversations in Civil Engineering!

CODE FOR SIX LANING HIGHWAY (SP.087.2019) This Manual describes the planning, standards, design, construction, maintenance, operation, safety and environmental requirements to be fulfilled in execution of the works of [ ] under a concession or Contract agreement and shall be read harmoniously and in conjunction with the latter. This Manual is applicable for widening of highways from 4-lane to 6-lane through Public Private Partnership (PPP) mode. The general planning aspects laid out in this manual shall be applicable for widening from 2/4-lane to 6-lane or new construction of 6-lane highways. The scope of the work shall be as defined in the Concession Agreement. This Manual shall be read harmoniously with the intent of the Concession Agreement. The Manual may also be used for non-PPP projects. ##CONTENTS:- # Geometric design and general features # Intersection and grade seperator # Embankment and cut section # Pavement design # Highway drainage # Design of structure # Traffic control # Toll plazas # Landscaping and tree plantion # Project Facilities # Hill roads # Tunnels #Civilengineering #Codes #Highways #Roads #Structure #Constuction

The Hwy 212 Bayou Derriseaux Structures project involved the replacement of two bridges - a main structure and relief structure - over Bayou Derriseaux on Highway 212 in Cleveland County, Arkansas. The goal was to improve hydraulic capacity, comply with Arkansas Department of Transportation (ARDOT) standards and remove load limits. The new integral bridges, measuring 143 feet by 33 feet and 241 feet by 33 feet, feature two 11-foot-wide paved travel lanes with 4-foot-wide shoulders. One of the key advantages of these integral bridges is their durability. By eliminating expansion joints and ensuring structural continuity, they require less maintenance and offer superior performance in terms of structural integrity, seismic resistance, and ride quality. Michael Baker International played a crucial role in this project, providing roadway and bridge design plans, hydraulic and geotechnical studies. The project also involved acquiring additional right of way and temporary construction easements. Learn more: https://lnkd.in/eNmwWvJV #InfrastructureImprovement #StructuralSystems #Engineering #BridgeEngineering #BridgeDesign 

Concerned about the safety of local bridges? Don't be, say local engineering experts, including ATLSS Structural Engineering Research Center's Richard Sause. Read more about bridge safety and inspections here: https://lnkd.in/ei4mfeg5

Austin City Council approved a nearly $23 million contract to build a new bridge across Lady Bird Lake near the Longhorn Dam. The now-approved construction contract is with Jay Reese Contractors, with a $20.7 million baseline amount along with an additional $2 million in contingencies. The project will create a new pedestrian and cyclist bridge across Lady Bird Lake, near the Longhorn Dam in east Austin. Read the full article on KXAN at https://lnkd.in/gff3JcKF. From designing resilient bridges and bulkheads to efficient pump stations and intricate tunnels, Stiver specializes in both above and below-ground projects. While we provide the best in all of our areas of expertise, structural design is at the core of every task. For this reason, we are equipped to guide you from mapping conceptual design to construction oversight. Find out what distinguishes us from others at https://lnkd.in/g4wpS2Bk. #stivereng #structuralengineers #structuralengineering #structuraldesign

When a structural emergency emerges, a community’s way of life can change in an instant. From adding time to and from work when a bridge is out of service to interrupting the transportation of goods, our team at Michael Baker International knows the impact that these disruptions can have, and we strive to address emergencies in a safe and efficient manner. Our rapid response helps to restore infrastructure to operation so communities can return to normalcy following a structural emergency. Learn more in our new video! 

The biggest public construction project in decades for the Portland metro area may break ground as soon as late 2025, according to the latest estimates from planners at the Interstate Bridge Replacement (IBR) project. IBR is the current incarnation of plans going back more than two decades to replace the aging Interstate 5 bridge over the Columbia River. Read the full article on Northwest Labor Press at https://lnkd.in/gqFpRKQR. Here at Stiver, we appreciate that each client and project is unique in terms of needs and preferences. This is why our skilled team of engineers is the best choice for your project. We tentatively oversee each process from conceptual decisions to implementing and completing construction so that the integrity of your overall project is robust and durable. See how our commitment to excellence has set us apart in structural design at https://lnkd.in/g4wpS2Bk. #stivereng #structuralengineers #structuralengineering #structuraldesign

The American Association of State Highway and Transportation Officials (AASHTO) provides specifications for the design and analysis of highway structures, including guidelines for load distribution. In this post, we'll discuss AASHTO's recommendations for distributing point loads, such as those from vehicle wheels, and the transition to considering loads as distributed. Point Load Distribution: According to the AASHTO LRFD Bridge Design Specifications, wheel loads should be considered distributed over a circular area with a diameter of 300 mm (approximately 11.8 inches) for design purposes. This guideline ensures that the pressure resulting from a wheel load is uniformly distributed over a defined area. Depth Considerations: At a depth of 70 cm (approximately 27.6 inches) beneath the point load, the AASHTO guidelines indicate that the load should be considered distributed rather than a concentrated point load. This transition from a point load to a distributed load accounts for the dispersion of the applied load and its diminishing effect with depth. #AASHTO #HighwayEngineering #StructuralDesign #BridgeDesign #CivilEngineering #LoadDistribution