| Connect Follow us on Twitter Like us on Facebook
About | Subscribe | Advertise


Download our free Bridge Coating Systems eResource Book

Paint and Coatings Industry News

Main News Page

Golden Gate Needs Extra Rust Repairs

Friday, January 25, 2013

More items for Program/Project Management

Comment | More

Extensive corrosion found this month on the Golden Gate Bridge will require more immediate repairs and extra funding for the current seismic retrofitting contract.

The recent, routine inspection of the structural steel elements was conducted in connection with the ongoing design of the bridge's seismic retrofit.

Corrosion was found on two sets of wind-locks, on both the north and south towers. Located underneath the bridge's roadway, the box-shaped steel wind-locks are made of vertical plates and horizontal lacing bars and transfer lateral forces caused by wind and seismic events from the span to the towers.

Wikimedia Commons / Rich Niewiroski Jr.

Extensive corrosion recently found on the Golden Gate Bridge's wind-lock boxes requires more immediate repairs and an extra $475,000.

The Golden Gate Bridge conducts constant inspections, but a spokesperson for the bridge's Highway and Transportation District could not immediately confirm exactly when the wind-locks were last inspected.

The district's Finance-Auditing Committee is scheduled to meet on Friday, Jan. 25 to authorize a $475,000 budget increase for the repairs.

Repairs Require Complex Access

The district engineer asked the design consultant already working on the seismic retrofit project to perform a structural analysis and design of the wind-lock repairs and develop the construction drawings and specifications for the repairs.

Repairs will involve the following:

  • Designing, furnishing and installing temporary access platforms;
  • Furnishing and installing temporary pipe struts to stabilize wind-lock braces when existing lacing bars are removed;
  • Removing existing fasteners and lacing on the top and bottom of each wind-lock;
  • Removing temporary struts when they are no longer needed;
  • Blast cleaning and painting existing steel and new structural steel; and
  • Removing the temporary access platforms once work is complete.

According to the engineering staff's report, the most cost-effective, timely way to perform the work is under a contract change order to the current contract with North Anchorage Housing and North Pylon for ongoing seismic retrofit work.

Establishing a separate construction contract for the wind-lock repairs would delay the work by eight to 10 months while the district advertised, awarded and mobilized each contract, the report said.

By using the same contractor, work will already be coordinated with existing construction, and the contractor already understand the complexity of the project, which the report says involves "substantial amount of structural steel fabrication and erection" and requires "precise measurements and investigations of existing conditions, installing of complex access systems, and adherence to detailed work plans."

Utilizing the existing contractor will eliminate the cost of the learning curve that new contractor would have.

Additionally, changing the contract to include the wind-lock repairs will allow for the same lane closures already planned through the late spring.

Price Tag

The report said that the engineering staff and contractor have negotiated a price of $375,000 for labor, equipment and materials. The remaining $100,000 will fund analysis and design, district labor, and other items.

The district has already received the go-ahead for the contract change from the FHWA and Caltrans, with the understanding that the cost of the wind-lock repairs is not eligible for federal funds and will be funded from district reserves.


Tagged categories: Bridges; Corrosion; Structural steel

Comment from Lloyd Korzen, (1/25/2013, 12:03 PM)

Corrosion remediation is always on the top of the list! Products to consider depending on what degree of surface preparation and result that I have found extremely effective are Resimac Aluprime from and Lifeguard Rust Converter and Primer from! Incredible products in my opinion.

Comment Join the Conversation:

Sign in to our community to add your comments.

Ethox Chemicals LLC
Ethoflex® ER instantly upgrades your epoxy!

The only epoxy additive that improves flexibility, corrosion resistance, toughness, and adhesion, without hurting pot life, cure time, or increasing VOCs.

Minerals Research & Recovery

Sharpshot®XL is a new fast-cutting, low-dusting, cost-effective iron silicate abrasive. Call Patrick Conry: 502-552-5895 for details.

Covestro (formerly Bayer)
Bayer MaterialScience is now Covestro.

The pioneering spirit of our first 150 years will drive the bold vision of our next 150: to develop the industry’s most innovative coatings solutions.

Graco Inc.
Graco Mortar Pump

The M680 sprays epoxy-based mortars, anti-skid coatings, cementitious and filled materials. Compact.
Easy to use.
Call 877-844-7226 or

Thermion Inc
Buy Back Program

We are offering $5,000
credit for your old Model
This drive system is
being discontinued by
the manufacturer.
More information at

Atlantic Design, Inc.

what we did to this machine! Let ADI upgrade your machine, extending the life, efficiency, and value. Any make. Like new, but better! 866.Call.ADI

HoldTight Solutions Inc.

Our HoldTight®102 salt remover & flash rust preventer prevents flash
rust by removing surface contaminants. It has no equal; only wannabees.
Contact us for your
nearest distributor.
(800) 319.8802

PPG Protective and Marine Coatings Group
Industrial strength performance in ONE can.

Now get the durability and protection of two components in one can: Amercoat® ONE, PSX® ONE and Sigmadur ONE.

Safway Services
Suspended Access Made Easy With QuikDeck™

The smart choice for suspended access, QuikDeck’s interchangeable, lightweight components make them easy to set up and reassemble when you need to move.

Termarust Technologies
Termarust (HR CSA) Chemically Stops
Active Corrosion

Truss bridge treated with Termarust's (HR CSA) in 1995. This highway & rail truss bridge is still stable and there still is no active corrosion.

Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker

EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us

© Copyright 2000-2015, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail