SRW_BID_03_-_323413_SF_-_PREFAB_PEDESTRIAN_BRIDGE3.pdf

SUNFLOWER RIVER WALK

PEDESTRIAN BRIDGE DESIGN, FABRICATION, DELIVERY 23 JANUARY 2026 323413–1

DOCUMENT 323413 – PREFABRICATED SIDE TRUSS FRP PEDESTRIAN BRIDGE

PART 1 GENERAL

1.1 SCOPE

A. These specifications are for a fully engineered clear span side-truss pedestrian bridge of fiber-reinforced polymer (FRP) composite construction and shall be regarded as minimum standards for design and fabrication.

1.2 QUALIFIED SUPPLIERS

A. The bridge manufacturer shall have been in the business of design and fabrication of bridges for a minimum of 5 years and provide a list of five successful bridge projects, of similar construction, each of which has been in service at least 3 years. List the location, bridge size, owner, and contact reference for each bridge.

PART 2 - GENERAL FEATURES OF DESIGN

2.1 SPAN

A. Bridge span will be 80' 0" (straight line dimension) and shall be measured from each end of the bridge structure.

2.2 WIDTH

A. Bridge width shall be 8' 0" and shall be measured from the inside face of structural elements at deck level.

2.3 BRIDGE SYSTEM TYPE

A. Bridge must be designed as a FRP Composite Side-Truss Span .

2.4 MEMBER COMPONENTS

A. All members shall be fabricated from pultruded FRP composite profiles and structural shapes as required.

2.5 CAMBER

A. Bridge shall be precambered to eliminate initial dead load deflections. Minimum camber shall be 1% of the total span length.

PART 3 - ENGINEERING

A. Structural design of the bridge structure(s) shall be performed by or under the direct supervision of a licensed professional engineer and done in accordance with recognized engineering practices and principles.

3.1 UNIFORM LIVE LOAD

PEDESTRIAN BRIDGE DESIGN, FABRICATION, DELIVERY 23 JANUARY 2026 323413–2

A. Design live load (LL) shall be a minimum of 90 psf.

3.2 VEHICLE LOAD

A. There is no anticipated vehicle loading associated with this bridge. The bridge will be posted on either end with “No Motor Vehicles” signs (R5-3) by the City of Clarksdale.

3.3 WIND LOAD

A. Bridge shall be designed for a minimum wind speed of 125 mph.

3.4 SEISMIC LOAD

A. The seismic design category shall be “C”.

3.5 OVERTURNING LOAD

A. The design overturning load shall be 20 psf.

3.6 SNOW LOAD

A. Design snow load shall be 27 psf.

PART 4 - MATERIALS

4.1 FRP COMPOSITES

A. FRP bridges shall be fabricated from high-strength E-glass and isophthalic polyester resin unless otherwise specified.

B. Weathering and ultraviolet light protection shall be provided by addition of a veil to the laminate construction. Minimum material strengths and properties are as follows:

C. Tension: 33,000 psi

D. Compression: 33,000 psi

E. Shear: 4,500 psi

F. Bending: 33,000 psi

G. Modulus: 2,800,000 psi

H. Young's Modulus: 2,800,000 psi

I. The minimum thickness of FRP Composite shapes shall be as follows unless otherwise specified:

Square-tube members (closed-type shape) shall be 0.25 in. Wide-flange beams, channel sections, and angles (open-type shapes) shall be a minimum thickness of 0.25 in. Standard plate shall be a minimum thickness of 0.25 in.

4.2 DECKING

PEDESTRIAN BRIDGE DESIGN, FABRICATION, DELIVERY 23 JANUARY 2026 323413–3

A. The prospective bidder will provide a bid for composite 2 x 6 plank decking as an additive alternate, independent of the manufacture of the bridge superstructure. The City of Clarksdale reserves the right to either reject or accept the additive alternate bid.

4.3 HARDWARE

A. Bolted connections shall be A307 hot-dipped galvanized steel unless otherwise specified. Mounting devices shall be galvanized or stainless steel.

PART 5 - SUBMITTALS

5.1 SUBMITTAL DRAWINGS

A. Schematic drawings and diagrams shall be submitted to the City of Clarksdale for their review after receipt of order and before manufacture begins. As required, all drawings shall be signed and sealed by a licensed professional engineer.

5.2 SUBMITTAL CALCULATIONS

A. Structural calculations shall be submitted to the City of Clarksdale after receipt of order and before manufacture begins.. All calculations will be signed and sealed by a licensed professional engineer.

PART 6 - FABRICATION

6.1 TOLERANCES

A. All cutting and drilling fabrication to be done by experienced fiberglass workers using carbide or diamond-tipped tooling to a tolerance of 1/16". No material deviations beyond industry standards are accepted. All cut edges to be cleaned and sealed.

PART 7 - FINISHING

A. Bridge color shall be determined by client. No painting is required as the color is added during the manufacturing process.

PART 8 - DELIVERY

A. Delivery will be made by truck to a location designated by the City of Clarksdale. The successful bidder will notify the City of Clarksdale when manufacture of the bridge is complete and arrange for delivery to the site. Unloading, splicing (if required) and placement of the bridge will be the responsibility of the City of Clarksdale.

PART 9 - WARRANTY

A. The successful bidder shall warrant the structural integrity of all FRP materials, design and workmanship for 15 years.

PEDESTRIAN BRIDGE DESIGN, FABRICATION, DELIVERY 23 JANUARY 2026 323413–4

B. This warranty shall not cover defects in the bridge caused by foundation failures, abuse, misuse, overloading, accident, faulty construction or alteration, or other cause not the result of defective materials or workmanship.

C. This warranty shall be limited to the repair or replacement of structural defects, and shall not include liability for consequential or incidental damages.

END OF DOCUMENT 323413