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Bridge Inspection Program Manager
for Municipality - 2015
Contract No. 0903-09
Falls Church, Virginia
SWA worked with the City of Falls Church in Virginia to identify and initiate a bridge inspection program. Prior to 2013 the City had not performed any inspections of the bridge and culvert crossings in the jurisdiction. SWA was selected to assist the City in creating a sustainable bridge inspection program. SWA identified and recorded GPS coordinates, structure type/material, span length/opening size, structure width, and general condition. SWA created a spreadsheet file with the obtained information, classified each structure as NBI or Non-NBI, and recommended inspection frequency for each structure based on NBIS and VDOT criteria. SWA acted as the Program Manager on behalf of the City of Falls Church in multiple meetings with VDOT to begin the initial inspections. SWA performed the initial inspections and introduced City personnel to the bridge inventory in the field including project managers, design engineers, and maintenance personnel. SWA recommended repair items that the City maintenance forces could complete and items that would need to be included in a larger scale repair contract. SWA provided guidance on frequency and cost for performing the maintenance items discussed as well as comprehensive maintenance guides from other jurisdictions. SWA developed inspection reports that met NBIS and VDOT standards. SWA compiled a master list of all the repair recommendations and worked with the City’s project manager to prioritize the repairs while considering the funds available from the available budget. SWA performed the 2015 annual inspections of the NBI structures that required a 12 month inspection frequency and performed the initial inspection of the Non-NBI structures. With the initial cycle of inspections completed, SWA is working with the City to make long term projections for inspection, maintenance, repair, and rehabilitation costs.
Bridge Inspection, Evaluation and Rating Services
BCS 2010-16C, D and H - 2013
Sabra & Associates, Inc. (SAI) was responsible for the inspection of 179 bridges throughout Maryland. These inspections included bridges in Montgomery County, Caroline County, Alleghany County, Baltimore County, Garrett County, Washington County, Harford County, and Baltimore City. The structures inspected consisted of concrete and steel bridges, concrete and steel culverts, and timber bridges. Hands-on inspections were performed for vehicular bridges over waterways, roadways, and railroad tracks. Snoopers, bucket trucks, ladders, boats, bucket boats, hi-rail vehicles, and rigging were utilized to gain access to the structures. SWA personnel coordinated with vendors to obtain all necessary traffic permits, railroad safety training, and access equipment. Stream soundings were taken for bridges over waterways and compared to the base year data to track changes to the stream bed. InspectTech or manually created inspection reports were prepared for each structure which included identification photographs, summary of findings, photographs for notable defects, review of load ratings (if available or creation of load ratings), repair recommendations, Structural Inventory and Appraisal (SI&A) forms, PONTIS forms, and sounding data (if applicable).
Three of the 179 bridges noted above were inspections of bridges with fracture critical members over Amtrak Railroad property. These structures included a steel box girder, steel
through girders, and a steel pier. SWA performed confined space inspections for the steel
box girder and steel pier.
Noise Wall Inspection and Repair Design
Contract No. BCS 2007-18A - 2015
Maryland State Highway Administration, Statewide
Sabra & Associates, Inc. (SAI) was responsible for providing structural engineering services including reviews of Engineer’s Requests for noise barriers across the State. SWA inspected damaged or otherwise distressed noise walls, designed repairs and created repair plans. Most of the designs were minor in nature, such as tightening or replacing cables, shimming, patching or replacing panels. Often, damaged noise wall panels also impacted existing foundation elements and the repairs included replacement foundations, noise wall posts and panels. SWA prepared rapid turn-around individual sub-task proposals and cost and price summary sheets for each noise barrier for review and approval by MDSHA. The work and budget for each noise barrier was tracked separately and SWA maintained a summary with the status of each noise barrier assigned. SWA provided professional engineering services for review, inspection, evaluation, and development of recommendations and plans, special provisions and estimates to repair noise barriers; including panels, posts, foundations, slopes, and other incidentals. SWA also was responsible for review of shop drawings and consultation during construction.
Sign Structure Inventory, Inspection, Standard Development and Custom Design - 2006
State Highway Traffic Engineering Design Division (TEDD)
Sabra & Associates, Inc. (SAI) was responsible for the design of the deteriorated stringers and lateral bracing per recent bridge inspection and evaluations, designing the repair details for all deteriorated steel members including, but not limited to: bascule girders, floor beams, stringers, stiffeners, steel grid deck, concrete repairs to the piers that enclose the bascule girder machinery, roof replacements for the operator’s house as well as replacement of architectural features such as doors and windows.
The two (eastbound and westbound) 200-foot bascule bridges consist of four leaves, each complete with wind bracing, sway framing, center-locking machinery, and finger joints. All leaves were rehabilitated with new open grid decks, traffic barriers, and purlins, while floor beams, stringers, wind bracing, and sway framing were only replaced as necessary.
Additionally, SWA prepared painting plans, details, and notes for all new and existing steel members. SWA also provided specifications, engineering estimates and post award services which included meetings, shop drawing review, and field construction inspection services about two days per week for period of 12 months.
Corridor Cities Transitway - 2016
Design Services – Phase 1
MTA 1264A, Task 25
Montgomery County, MD
Sabra & Associates, Inc. (SAI) is responsible for the design of two new bridges, the design of every retaining wall and every culvert extension along the proposed Phase 1 of the Corridor Cities Transitway (CCT) Bus Rapid Transit (BRT) alignment. Phase 1 of the CCT will travel along the I-270 corridor connecting the Shady Grove Metrorail Station in Rockville to the MARC Metropolitan Grove Station with the planned future Phase 2 continuing on to COMSAT, just south of Clarksburg, MD in Montgomery County.
CCT Bridge over I-270
SWA is designing the foundations, substructure and superstructure of a new 10-span CCT bridge. This proposed bridge will carry the CCT over Shady Grove and then continue over I-270. The bridge will include a hiker/biker trail as well as the CCT busway lanes.
Muddy Branch Bridge
SWA is designing the foundations, substructure and superstructure of a new 3-span CCT bridge. This proposed bridge will carry the CCT over the Muddy Branch along the southern edge of the existing Great Seneca Highway Bridge over the Muddy Branch and be designed to blend in with the existing structure. The existing bridge that carries Great Seneca Highway over Muddy Branch was constructed in the late 1980s by Montgomery County.
SWA is designing 26 new CCT retaining walls. The CCT alignment will utilize many retaining wall types in order to minimize impacts to adjacent properties in a combination of cut and fill conditions.
Drainage Structures Extensions
SWA is designing five culvert extensions under the proposed CCT alignment. These extensions are being designed for existing small structures of various materials including corrugated metal, concrete box and precast arch.
Baltimore Red Line Light Rail Design Services - 2015
Baltimore City and Baltimore County, Maryland
Sabra & Associates, Inc. (SAI) designed two new bridges, including new foundations, substructure and superstructure to carry the Baltimore Red Line over local streets adjacent to existing I-70. Structural analysis was performed on the existing bridges to remain in use for vehicular traffic to verify a safe continuation of service. SWA designed six retaining walls along the proposed Red Line alignment, utilizing both cast in place cantilever concrete walls and soldier pile and lagging walls. SWA designed over 30 custom utility structures from large drain junction boxes to steam manholes and conduit manholes. SWA supplied staff to assist with the design of underground stations, platforms and tunnel portal structures.
SWA inspected buildings adjacent to the proposed tunnel sections of the Baltimore Redline, collected structural plans of the buildings and performed structural analysis of the buildings to identify any issues with the proposed tunnel construction and verify building safety.
SWA was responsible for underground and overhead utilities relocation and/or modification for the Baltimore Red Line Light Rail. Responsibilities included utility relocations for City and County water mains, sanitary sewers and force mains, and City Conduit system (electric and telecommunication) in accordance with the utility owner and Red Line design requirements. The utility relocations required coordination with the overhead and underground facilities of Baltimore Gas and Electric Company, Gas and Electric Divisions, including transmission and distribution, Veolia (steam, hot and chilled water systems), Verizon of Maryland, Verizon Business (formerly MCI/Worldcom), AT&T (Transmission and other operation divisions), Comcast, 24/7 and other fiber-optic telecommunication companies.
SWA collected existing as-built/record drawing involving extensive coordination with multiple City departments (Bridges, Highways, Permits & Licenses) and external agencies CSX Railway, Norfolk Southern Railway, Amtrak, Maryland State Highway Administration and over 300 individual private property owners and management companies.
Engineering Services - 2009
I-95 Section 100
Sabra Wang & Associates (SAI) prepared the design/build documents for eight Noise Walls totaling approximately 9,597 ft comprised of six Ground Mounted Noise Walls totaling approximately 8,927 feet and two Retaining Wall Mounted Noise Walls totaling approximately 670 feet along both the northbound and southbound corridors of Interstate 95 north of Chesaco Avenue. The retaining walls ranged in height from 10 feet to 38 feet while the noise walls ranged from 15 feet to 36 feet tall.
Portions of the ground mounted Noise Walls were supported by concrete posts embedded in caissons and others were supported by steel posts mounted on the caissons while the Retaining Wall Mounted Noise Walls were supported by steel posts mounted on the retaining walls. Site visits and field investigations were conducted and data was collected from existing Utility Plans to evaluate existing utilities, storm drains, and inlets and their impact on the proposed wall. Typical sections and geometric layout for the proposed retaining wall were developed and the design was performed in accordance with MD SHA design standards and AASHTO Bridge Design Specifications. A report was prepared which included the preliminary investigation study and cost comparisons for the most economical type of construction.
Inspection, Rehabilitation Design and Construction Support Services - 2014
Edmondson Avenue Bridge Project
Sabra & Associates, Inc. performed a hands-on visual inspection and prepared a detailed findings report for this century old bridge, 540-foot long, four-span concrete arch structure on Edmondson Avenue (U.S. Route 40) near Hilton Parkway. The bridge crosses over the CSXT Railroad, the Gwynns Falls and trail.
A right-of entry permit was obtained from CSXT Railroad prior to inspecting the span over the tracks. The exterior of the bridge was inspected using ladders, lift trucks and an under bridge inspection access vehicle (snooper).
Reinforced concrete spandrel walls enclose the interior superstructure, which is composed of a reinforced concrete deck supported by concrete encased steel floor beams and reinforced concrete columns and struts. Confined space procedures were followed for the in-depth inspection of the bridge interior.
SWA was also responsible for designing and developing plans, specifications, and cost estimates for replacing the bridge abutments, wing walls and utility hangers (for DPW Water, BG&E and Verizon) for the project. Design challenges included designing a unique thirty-six foot tall wing wall as well as the steel H-piles for the abutment foundations. SWA will perform construction support services as the construction phase is completed.
Open-End Trackwork Design Services - 2014
Sabra & Associates, Inc. was responsible for:
Condition Inspection, Evaluation and Design for Emergency Bridge Repairs for Movable Bridges,
BCS 2008-10B - 2013
Sabra & Associates, Inc. (SAI) was responsible for inspection services for the condition inspection and report preparation for MD 436 over Weems Creek, MD 18B over Kent Narrows, MD 370 over Miles River, the Rt. 50 over Sinepauxent Bay, MD 795 over Cambridge Creek, MD 213 over Sassafras River, MD 213 over Chester River and MD 331 over Choptank River. Reviewed existing inspection reports, scour evaluations and maintenance & repair records. Provided NBIS compliant inspection teams to include an NBIS qualified Team Leader and a Junior Inspector. Utilized a snooper or boat to conduct a hands-on inspection of all deck, superstructure, and substructure elements. Utilized a boat and tender to conduct a hands-on inspection of the fender systems and obtain soundings as applicable. Mechanical and Electrical portions were to be inspected by others. Prepared inspection reports with updated SI&A and Pontis for all inspected elements. Structural portion of the final report was signed and sealed by an SWA Maryland Registered Professional Engineer. Coordinated schedule, coordinated access equipment, and obtained necessary traffic permits with MDSHA. In addition to other minor repair designs, SWA designed the addition of traveler beams to the MD 436 Bridge over Weems Creek to allow maintenance staff to pick and swing the lift cylinders into place for repair and replacement.
Emergency Engineering Services for the
Monument Street Sinkhole - 2013
Sabra Wang & Associates, Inc. (SAI) responded to an emergency call about a sinkhole due to a possibly failed 10 - foot diameter brick masonry storm drain. SWA personnel performed the confined space inspection of approximately 700 feet of the storm drain on July 25, 2012 at a depth of 40 feet below grade. SWA inspectors found that the storm drain had failed and partially collapsed, leading to the sinkhole. SWA was responsible for the analysis and design of the structural support of adjacent residences and roadway. SWA designed a 22-foot diameter access shaft to allow the equipment needed to conduct the repair work to be lowered down to the drainage tunnel. SWA personnel were on-site during the sheet pile driving and installation of the access shaft.
SWA designed the permanent repair for the storm drain which involved installing a 9-foot diameter steel tunnel liner inside the existing storm drain with grouted annular space and hydraulically applied concrete interior surface. SWA analyzed and designed the tunnel liner and a smaller permanent access shaft with a removable concrete roof under the repaired roadway. SWA determined the limits of the permanent repair and performed the post construction inspection of the storm drain. SWA also inspected an additional 1,500 feet of the storm drain to identify any additional areas of deterioration in need of repair.
Bridge, Tunnel, Sign Structure, Wall and Utility Structure Inspection and Repair Design
MDTA - Multiple Contracts - 2011 - 2013
Sabra & Associates, Inc. (SAI) was responsible for the inspection of the Fort McHenry Tunnel, the Intercounty Connector (ICC), the Francis Scott Key Bridge, MD Route 43 Bridge over I-95. SWA reviewed previous inspection reports and plans, developed a detailed work plan, obtained necessary traffic permits, coordinated with access equipment providers, inspected each component assigned to them, and created a new report based upon the findings at each site. SWA performed the structural inspection of the plazas and roadway portion of the Fort McHenry Tunnel, the Francis Scott Key Bridge Toll Plazas, a 900-foot long retaining wall, 153 overhead and cantilever sign structures, 65 drainage structures, and 144 low level lighting structures. During the sign structure inspection SWA was responsible for performing reflectivity tests on 28 of the overhead and cantilever sign panels. SWA designed repairs to the West Bound Bay Bridge railing and pedestal repairs for the Curtis Creek Bridge. SWA designed the removal and replacement of 14 expansion joints on nine of the I-395 bridges. SWA developed pier repair designs involving temporary pier cap supports and the removal and replacement of deteriorated concrete.
SWA also performed the mechanical and electrical inspections for four toll plazas to check accessible electrical terminations and connections, CCTV, traffic signals, polarity of the electrical outlets, grounding, and bonding. SWA also performed the mechanical and electrical inspection for two toll gantries on the ICC.
7055 Samuel Morse Dr., Ste. 100
Columbia, MD 21046
443-741-3500 | F: 443-741-3700