HBM – Harlem Avenue over CSX

IL 43 (Harlem Avenue) over CSX Railroad and US 12/20 (95th Street)
Superstructure Replacement and Substructure Repairs
Municipality of Oak Lawn/Bridgeview,
Cook County, Region 1, District 1.

The existing IL 43 (Harlem Avenue) over CSX Railroad structure (S.N. 016-0321) consists of four spans (53′-1″ / 63′-2″ / 74′-1″ / 57′-10″). The total length of the bridge is 253′-2″ back to back of abutments and the overall deck width tapers from 84′-11⅝” at the South Abutment to 88′-9⅞” at the North Abutment. The deck thickness is 6¾” with a 2¼” latex concrete overlay. A 1″ longitudinal expansion joint is located beneath the centerline of roadway. The superstructure consists of eighteen lines of wide flange steel stringers. The concrete stub-type abutments and wingwalls are founded on concrete piles with 30 ton design capacities. 37 piles are positioned at the SouthAbutment and 39 at the North Abutment. The concrete piers are founded on 8′-6″ pile caps supported on 20 ton capacity timber piles. Six tapered rectangular columns support each pier cap.

The existing IL 43 (Harlem Avenue) over US 12/20 (95th Street) structure (S.N.016-0320) consists of four spans (40′-6″ / 57′-7½” / 56′-11″ / 38′-2½”). The total length of the bridge is 196′-11″ back to back of abutments and the overall deck width is 102′-9″. The deck thickness is 6¾” with a 2¼” latex concrete overlay. A 1″ longitudinal expansion joint is located beneath the centerline of roadway. The superstructure consists of eighteen lines of wide flange steel stringers. The concrete stub-type abutments and wingwalls are founded on concrete piles with 30 ton design capacities.38 piles are positioned at each abutment and wingwall unit. The concrete piers are founded on 6′-0″ wide spread footings. Six tapered rectangular columns support each pier cap.

Description of Scope of Work:

• Project Documents Review: Review existing documents including Bridge Condition Report (BCR), inspection reports, existing design and as-built plans, and rehabilitation plans.
• Detailed Field Inspection: Detailed Field Inspection to prepare a new BCR and to verify any additional required repairs.
• Bridge Condition Reports (BCRs) Preparation: Prepare BCRs to summarize the field inspection findings and include final recommendations.

Project Prime Consultant: HBM Engineering Group, LLC