Renovation of SR-513 Bridge over I-70
ODOT District 5 needed to rehabilitate its SR-513 bridge over I-70, which included increasing the vertical clearance to 16.5 feet over the interstate. Horizontally and vertically curved, the existing bridge was a skewed superstructure on doglegged steel beam bridge supported on cap and column piers and stub abutments on piles.
The superstructure was structurally and functionally deficient, so repairs were much needed. This was a complex geometry for the structure, and the construction needed to be part-width. Temporary support of the existing structure during part-width construction was required in design.
Using MicroStation ORD was highly beneficial on GUE-513, especially combined with a very accurate point cloud of the existing bridge (aerial lidar from ODOT and stationary lidar by Woolpert). Woolpert began using ORD tools on this project in 2015, long before ODOT mandated their use in 2020.
The structural team knew every square inch of the existing bridge and what could be salvaged to reduce costs. ORD tools were used to check proposed super elevations versus existing pavements since the existing had been measured to a high level of accuracy in the point cloud. Woolpert was able to quickly determine the areas of deficiencies along SR-513 and correct the pavement within the limits. ORD tools gave Woolpert the flexibility to evaluate multiple profiles and superelevation tie-in points along the corridor in a short period of time, which gave Woolpert immediate insights on the potential snags of each design alternative. The 3D model and ORD tools gave the team another method to verify quantities and eliminate errors. The superelevation, high truck volume and multiple intersections within close proximity required Woolpert to model truck turns and ensure the intersection areas are transversable on the proposed pavement surface.
Woolpert conducted a structure alternatives study to determine a preference to rehabilitate the bridge. The team performed structural analysis to determine if clearance could be obtained by reducing the depth of the superstructure or if raising the roadway profile was required. Woolpert collected survey data using static lidar and fused it with aerial lidar for use in the site plans.
Woolpert provided temporary support to facilitate part-width construction. Woolpert’s rehabilitation plans included superstructure replacement and widening, pier cap replacement (including temporary supports), and abutment rehabilitation and conversion to semi-integral. The new beams are Grade 50 W27x307’s versus the original 36WF beams, reducing the amount of required profile adjustment. The team designed the road pavement to be overlaid through the three intersections on SR-513, replaced existing guardrails and widened the ramp. The configuration of the work zone required Woolpert to develop complex maintenance-of-traffic plans and construction sequencing. The team maintained two-way traffic in a single lane via interconnected temporary signals controlled not only SR-513 through traffic, but also three adjacent intersections. Due to the amount of truck traffic at this interchange, an end-of-queue detector was installed to clear the ramp during construction, and the temporary signals were timed to provide extra time for Amish buggies to clear the work zone.
Woolpert received an ODOT Consultant Evaluation Score (CES) of 88%. Construction was awarded $400,000 below Woolpert’s cost estimate of $3.5 million and is now complete. Construction tallied just 0.1% in preventable design change orders, well under ODOT’s typical change order metric of 2%.
Ohio Department of Transportation (ODOT) District 5
Guernsey County, OH
Consultant Evaluation Score
Rehabilitate structurally and functionally deficient SR-513 bridge over I-70
- Determine bridge deficiencies
- Create 3D models
- Conduct structure alternatives study
- Design road and bridge improvements
- Bridge design
- Roadway design
- Maintenance of traffic alternatives analysis (MOTAA)
- Maintenance of traffic (MOT) plans
- Design-grade survey