S.P. H.001120

Ouachita River Bridge

at Harrisonburg

Bridge Replacement

Existing Bridge:

Long-Allen Bridge

Design Team:

Survey & Roadway:

Bridge:

Letting Date:

Contractor:

Low Bid:

Project Status:

Stantec Consulting Services Inc.

LA DOTD

July 24, 2013

Gilchrist Construction Co., LLC

$35.9 M

Under Construction

Bridge Type:

Route:

Feature Crossed:

ADT:

Roadway:

Road Length:

Bridge Length:

Main Spans:

Approach Spans:

Fixed / Navigable River Crossing

LA 8

Ouachita River at Harrisonburg

2900 (current) 4100 (design yr)

(2) 12-ft lanes & (2) 10-ft shoulders

2686 ft

3275 ft

Composite Steel Plate Girder

980-ft Continuous Unit

300 ft + 380 ft + 300 ft

BT-72 Prestress Girders

270-ft Continuous Deck Unit

135-ft + 135 ft

E.A. / F.O.N.S.I.

Alignment

Existing LA 8

Preferred

U.S.C.G.

Navigation Clearances /

Main Span Layout

52 ft above

2% Flowline

U.S.A.C.E. 2% Flowline = Elev. 58 ft

Vertical Horizontal

275 ft.

52 ft. Req’d

355 ft.

Main Spans

3- Span Continuous Composite Plate Girder

300 ft 300 ft 380 ft

55 ft Prov’d

Field Splices Hybrid Sections

Approach Spans

BT-72 2-Span Continuous Deck

Details / Features

• Prestressed Concrete: f’c = 8500 psi

• Special Finger Joint Design

Details / Features

• Prestressed Concrete: f’c = 8500 psi

• New Finger Joint Design

• Shoulder Drain Grates / Safety

Type “B”

Type “A”

Details / Features

• Prestressed Concrete: f’c = 8500 psi

• Special Finger Joint Design

• Shoulder Drain Grates / Safety

• Continuous Deck / Deck Link

Details / Features

• Prestressed Concrete: f’c = 8500 psi

• Special Finger Joint Design

• Shoulder Drain Grates / Safety

• Continuous Deck / Deck Link

• No Steel Angle Clips / Prestress Girders

• Disc V-Groove Bearings / Steel Girders

Rocker Bearing

Bearing Stiffener

Rocker Bearing

Disc Bearing

Details / Features

• Prestressed Concrete: f’c = 8500 psi

• Special Finger Joint Design

• Shoulder Drain Grates / Safety

• Continuous Deck / Deck Link

• No Steel Angle Clips / Prestress Girders

• Disc V-Groove Bearings / Steel Girders

• New Inspection Cable Termination

In the Past

Socket / Sleeve

Details / Features

• Prestressed Concrete: f’c = 8500 psi

• Special Finger Joint Design

• Shoulder Drain Grates / Safety

• Continuous Deck / Deck Link

• No Steel Angle Clips / Prestress Girders

• Disc V-Groove Bearings / Steel Girders

• New Inspection Cable Termination

• New Approach Slab Connection

In the Past

Approach Slab

Details / Features

• Skewed Subshafts

Details / Features

• Skewed Subshafts

• Drilled Shafts with River Bottom Footing

• Seal-to-Shaft Bond at Dewatering

Sheet Pile Cofferdam

Bottom of Excavation

Construction Photos

The End