100 North Street Bridge Over Logan River Project Rubber Bridge Engineering
Team
- Chandler Baird
- Evan Capron
- Micah Rasmussen
- Derek Walker
Superstructure Final Design
Limited Depth Plan Cross-Section View with W27x194 Girders
Substructure Final Design
Bridge Profile View
Foundations: Driven Piles
Piles are required for 100 North Bridge due to Logan City standards for local scour event from the Logan River. Piles were designed to be driven 42 feet into underlying gravel layer. “Driven Pile are Tested Pile” - PCDA
| Layer | Soil Type | Thickness | Setup Factor | Unit Weight | Strength | Nominal Curve |
|---|---|---|---|---|---|---|
| 1 | Cohesionless | 10.00 ft | 1.000 | 125.00 pcf | 34.0/34.0 | Nordlund |
| 2 | Cohesive | 23.00 ft | 1.000 | 97.00 pcf | 1985.00 psf | T-79 Steel |
| 3 | Cohesionless | 17.00 ft | 1.000 | 125.00 pcf | 32.0/32.0 | Nordlund |
| Pile Information | |
|---|---|
| Pile Type | H pile |
| Top of Pile (ft) | 8.00 |
| Diameter of Pile (in) | 14.70 |
| Nominal Considerations | |
| Water Table Depth At time Of | |
| Drilling (ft) | 10.00 |
| Driving/Restrike (ft) | 10.00 |
| Nominal (ft) | 10.00 |
| Nominal Considerations | |
| Local Scour (ft) | 15.00 |
| Long Term Scour (ft) | 0.00 |
| Soft Soil (ft) | 0.00 |
Superstructure Alternative
Void Slab Section View with Biaxial Voided Slab 4’ x 2’2”
Decision Matrix
Detour Route
The 100 North bridge provides the only access to over 250 homes as well as local businesses. These homes are enveloped by Logan River along the North side and a steep grade along the South side. This posed a significant problem for construction of the new bridge. To mitigate this problem Rubber Bridge Engineering designed a new road to be temporary placed in an acquired easement connecting Conifer Place to Pointe Place. This road will be deconstructed after the new bridge becomes operational.
Typical Section for Detour Route
100 North Street Bridge Proposal Summary
Rubber Bridge Engineering is over the 100 North Bridge Project used in the Logan River Restoration Project. The100 North Street Bridge is being replaced and the implementation of the proposed new bridge will improve the safety and aesthetics of the surrounding area. The new bridge will also accommodate a new and improved floodplain for the Logan River. Rubber Bridge Engineering designed a pre-engineered steel girder for the superstructure of the bridge and steel reinforced concrete piles for the foundation of the bridge. The transportation detour for the project uses the Conifer Place to Pointe Place detour route and roadway improvements. Funding this proposal will benefit Logan, Utah with a safer river system and an improvement towards the aesthetics and safety of the bridge
Special Thanks to
- Kyle Dana S.E. with Forsgren Associates
- Ziqi Song PhD with Utah State University
- Austin Ball with Utah State University