Prefabricated Bridge Elements and Systems
SH 36 over Lake Belton | |
|---|---|
| Location | Near Waco |
| State | TX |
| Completion Date | 2004 |
| Contact Person | Lloyd M. Wolf P.E. Design Branch Manager Bridge Division Texas Department of Transportation 125 E. 11th Street Austin TX 78701 Phone: (512) 416-2279 Fax: (512) 416-2557 Email: lwolf@dot.state.tx.us |
| Description | Because of fluctuating water surface elevations on the lake and uncertainties about performance of underwater precast column joints, designers chose a cast-in-place twin-column arrangement for replacement of the Lake Belton bridge. Twin bridges will be 3,840 feet long with 62 identical precast interior bent caps. The hammerhead bents will be some of the highest-moment-demand cap-to-column connections used yet with precast caps in Texas, presenting new design challenges. TxDOT bridge designers are developing design procedures extended for high-moment-demand connections. TxDOT has funded a 2002 Research Implementation Project to adapt and implement guidelines for multi-column bent cap connections to single-column, high-moment-demand connections and to continue development of specifications addressing grout placement, segregation, and durability. |
| Photo |  |
| Prefabricated Elements | partial, pier |
| Other Keywords | Precast bent caps; precast prestressed deck panels; precast prestressed U-beams,precast deck panels with topping slab,precast pretensioned partial-depth deck panels |
| Advantages | Constructibility: A primary source of water for Waco and an important flood control resource for the area, Lake Belton's water level is highly variable, as much as 48 ft, reaching as high as the bottom of the bridge's beams on occasion. Using precast components limits construction dependence on the lake level. |
| Related Document 1 | Interior Bent with Precast Cap and High-Moment Connection (PDF, 1.1 mb) HTML Version: |
| Photo Credits | Texas Department of Transportation |
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