Main Street Bridge (Jacksonville)
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Main Street Bridge | |
Official name | John T. Alsop Jr. Bridge |
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Carries | four general purpose lanes and two sidewalks |
Crosses | St. Johns River |
Locale | Jacksonville, Florida |
Maintained by | Florida Department of Transportation |
ID number | 720022 |
Design | steel lift bridge |
Longest span | 111.3 meters (365 feet) |
Total length | 512.1 meters (1680 feet) |
Width | 17.6 meters (58 feet) |
Vertical clearance | 4.87 meters (16.0 feet) |
Clearance below | 11 meters (35 feet) closed 41.1 meters (135 feet) open |
Opening date | July 1941 |
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The Main Street Bridge was the second road bridge built across the St. Johns River in Jacksonville, Florida (the first was the Acosta Bridge). It carries four lanes of traffic, signed as U.S. Route 1/US 90 (SR 5/SR 10). The lift bridge opened in July 1941 at a cost of $1.5 million. In 1957 it was named after Mayor John T. Alsop, Jr., but continues to be known, even on road signs, as the Main Street Bridge.
[edit] North (downtown) approach
When the bridge was first built , its north end was at the intersection of Main Street and Water Street. Traffic continued north on Main Street, with a one-way pair being made at some point; after that, northbound traffic turned right on Water Street and left on Ocean Street.
In 1978, several approach bridges and ramps were built. Main Street now goes over Water Street, and a ramp now carries all traffic from the bridge diagonally into Ocean Street, with a second bridge over Water Street. Ramps provide access to and from Water Street.
[edit] South approach
The bridge originally ended at Miami Road (now Prudential Drive). When Jacksonville's original expressway system was built, in 1958, ramps were built connecting this intersection to the new expressway (now I-95 (SR 9)) connecting the Fuller Warren Bridge and the Acosta Bridge to Phillips Highway (U.S. Route 1 (SR 5)) and Atlantic Boulevard (US 90 (SR 10)).
In 1968, a flyover was built between the ramps to I-95 (SR 9) and the bridge, with frontage roads continuing to serve Miami Road and several other cross streets. Thus there is now uninterrupted traffic flow from I-95 (SR 9) to the Main Street Bridge.
[edit] External links
St. Johns River crossings in the Jacksonville, Florida area | |
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Upriver from Downtown Jax | Shands Bridge (to be replaced or supplemented) - Buckman Bridge - Timuquana Bridge (never built) |
Downtown Jax | Fuller Warren Bridge - FEC Strauss Trunnion Bascule Bridge - Acosta Bridge - Main Street Bridge - Hart Bridge - Mathews Bridge - 20th Street Extension (never built) |
Downriver from Downtown Jax | Dames Point Bridge - Florida State Road 113A (never built) - Mayport Ferry |
Crossings of the St. Johns River | |||
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Upstream Acosta Bridge |
Main Street Bridge |
Downstream Hart Bridge |