January 2018 MdQI Award Winning Project: Renovation of a Historic Burr Arch Timber Truss Bridge

Presenters: Keith Duerling, P.E., Baltimore County Department of Public Works Megan Peal, P.E., Wallace Montgomery Jericho Road Covered Bridge over Little Gunpowder Falls

• Actual Cost: $1.54 Million • Designer: Wallace Montgomery • Contractor: Kinsley Construction/Barns & Bridges of New England • Owners: Baltimore & Harford Counties (MD) Agenda

• Introduction and Background • Purpose and Need • Design • Construction • Conclusions • Best Practices Location of the Structure

• Owned by Baltimore and Harford Counties • Located within Harford County Gunpowder Falls State Park Jerusalem Mill Village

Jericho Road Covered Bridge

Baltimore County Structure Description

• Length = 86’-0” • Clear Roadway = 13’-0” • ADT = 700 Vehicles • Vertical Clearance = 12’-0” • Added to National Register of Historic Places in 1978

Theodore Burr, Drawing from US Patent No. 2,769X, April 3, 1817 History of the Structure

• Timber Burr Arch Truss Constructed circa 1865 • Timber Evaluation Suggests a Major Rehabilitation Completed around 1900 Jericho Road Covered Bridge circa 1936 • Rehabilitation in 1937 • Metal Tie-rods • New Deck and Siding • Rehabilitation in 1982 • Steel Beams to Support Timber Deck • New Roof • Masonry Repairs • Localized Truss and Arch Repairs

National Park Service, Historic American Building Survey MD-12, 1936 Purpose and Need

• Deterioration of Existing Structure • BSR 48.5% • Deck, Superstructure and Substructure had condition ratings of 6 (Satisfactory) • Steel Beams Exhibited Minor Surface Rust • Bearings Exhibited Heavy Surface Rust • Timber Exhibited Localized Areas of Decay • Roof Was Severely Deteriorated • JMT performed a detailed condition inspection and designed emergency arch repair in 2009 FHWA National Historic Covered Bridge Preservation Program

• State Highway Administration Informed County of Preservation Program • Funding up to 80% of Project Costs • JMT Assisted County in Developing Application Package • Justification for Rehabilitation • Preliminary Cost Estimate • Grant Awarded 2010 • Initiated Federal Aid Project Design Timeline

FHWA Grant NTP for Design Design Construction Application Completed Started

Feb. 2009 April 2011 May 2014 April 2015 Design

• Inspection • Public Meeting • Preliminary Design Plans • Construction Documents • Coordination with Maryland • Advertisement Historic Trust • Environmental Clearances and Permits Public Outreach

• Public Meeting Held December, 2011 • Concerns Regarding Vandalism and Overheight Trucks • Gunpowder Falls State Park and Friends of Jerusalem Mill • Final Paint Color Selection • Allowed Use for Property of Field Office • Representatives Invited to Progress Meetings During Construction • Media Coverage Bidding Process

• Two-Part Qualification Bidding • Qualifications Packet • Score of 70 Required • Graded by Baltimore County, Harford County and Wallace Montgomery Representatives • Price Proposals Opened Only from Qualified Contractors Construction Timeline

April April 2015 2016 Summer Fall Winter Spring

Bridge Moved Truss Work Completed Protective Traffic Barriers Steel Beam Painted Bridge Moved Back Coatings Overheight Warning New Timber Deck New Roof & Masonry Applied Video Surveillance Complete Paving Moving the Bridge Truss Moving the Bridge Truss – Video 1 Moving the Bridge Truss – Video 2 Truss Repair Truss Repair Truss Repair Additional Deterioration Structural Steel Cleaning and Painting Timber Deck Installation Moving the Truss Back into Place Wing Wall Masonry Work Roofing and Siding Protective Coatings

• Insecticide • Fireproofing • Paint • Anti-Graffiti Steel Backed Timber Traffic Barrier Overheight Vehicle Warning Video Surveillance Cameras Ribbon Cutting – April, 2016 Memorializing Project

• Construction Progress Photographs • As-Built Modifications to Advertised Plans • Retain Material/Product Specifications for Coating Systems • Retain Operational Manual/Specifications for Surveillance System • Project Information Added to ’s Historic Buildings Survey/Historic American Engineering Record (HAER No. MD-187) Best Practices

• Communication between Government Agencies • Restoring Historic Features • Larger Contingent for Additional Timber Replacement • Internal Agency Coordination on Video Surveillance • Ancillary Items • Best Value/Qualification Bid Practice • Design Coordination/Quick Response for Field Changes Before and After

After Before Thank you! QUESTIONS?