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23rd Street Flyover Project

23rd Street Flyover Project / Photos


Picture of a Florida Roadway



Contractors tie reinforcing steel for permanent bridge foundation construction on the north side of U.S. 98 near the intersection of 23rd Street and U.S. 98.
The Bay Line Railroad travels across the railroad track underneath what will be eastbound U.S. 98. When completed, the 23rd Street Flyover will eliminate the signalized U.S. 98 intersection for eastbound and westbound traffic at 23rd Street.

To construct the eastbound U.S. 98 bridge, contractors set 72-inch tall, 390-foot-long steel tub girders atop hammerhead pier caps on the south side of U.S. 98.
Contractors install bearings on a hammerhead pier cap for steel girders to sit on. The purpose of a bridge bearing is to support the permanent bridge at a continuous elevation, reduce friction, transfer forces from the deck (roadway) surface into the bridge substructure, and allow necessary movement to occur.

One of several additional improvements for the 23rd Street Flyover project is new sidewalk construction on the south side of U.S. 98 in preparation of the opening of Temporary U.S. 98.
Construction of the Mechanically Stabilized Earth (MSE) wall for Ramp C continues on the north side of U.S. 98. Ramp C will allow westbound U.S. 98 traffic to access Collegiate Drive and Seaport Drive.

Contractors take delivery of drainage structures near the east end of the Hathaway Bridge. These drains will flow into Pond 1 of the project, located near Gulf Coast State College.
Extensive coordination with all utilities has been ongoing with the 23rd Street Flyover project.

Contractors are excavating and laying drainage pipe for construction at Pond 1, just east of the Hathaway Bridge.
Excavating and laying drainage pipe at Pond 1 on the north side of U.S. 98 continues.

Contractors use machines called tampers to compact or consolidate the soil around pipe and drainage structures on the north side of U.S.98 near 23rd Street.
Workers continue subsoil excavation along U.S. 98 in preparation for the Flyover Project’s Ramp C and retaining walls.

Contractors utilize a trench box and slope the existing embankment to lay and backfill the pipe trench.
Contractors are clearing and grading for the construction of Detour 1 (Alternate U.S. 98) on the south side of existing U.S. 98.

A wellpoint system is used throughout the pipe laying operation to draw out groundwater from sandy soil conditions on the north side of U.S. 98 near 23rd Street.


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