Inspections · USA
Timber inspection for America's aging bridges, and its buildings
From county timber bridges to 80-year-old glulam school gymnasiums and aircraft hangars, WRD reads the real condition of the structure with non-destructive testing, and hands you a load rating and a restoration plan, not a demolition order.
The USA Problem
Most of America's timber isn't in covered bridges
It’s in working buildings: thousands of timber industrial buildings, hangars, gymnasiums, and warehouses built 50 to 80 years ago from glue-laminated beams that were never designed for today’s loads, and many are now cracking or under-rated. A general contractor or non-specialist engineer sees the damage and quotes a teardown. WRD sees a structure that a proper diagnosis usually proves is sound or fully restorable. We separate real structural failure from surface decay with EPHOD® non-destructive testing, then give you a defensible verdict you can put in front of a school board, a county commission, or a federal reviewer.
Crew inspecting from an aerial work platform
Who We Serve Here
Built for US owners and their engineers
County engineers & DOTs
Federal agencies (Forest Service, FEMA / FHWA frameworks)
Railroads
GCs & engineering firms needing timber expertise
Historical societies & heritage stewards
Private developers converting timber buildings
The method, in brief
US inspections run on WRD’s accredited, non-destructive method, EPHOD® and PET stress-wave testing, and can open a design engagement with a client Hold Point. Our IAS-accredited, ALSC-approved lab also makes us the firm clients call for forensic timber investigation after a failure or dispute. See how a WRD inspection works →
Standards & Credentials
Rated to the codes your reviewers check for
We inspect and rate to NDS for Wood Construction, AASHTO LRFD Bridge Design, AREMA, AWPA, and ASTM D07, signed by a PE licensed in your state. IAS ISO 17020 (inspection) / ISO 17025 (testing) accreditation; ALSC-approved lab. Delivery runs the way US agencies buy, Design-Build and Design-Bid-Build.
Glulam arch connections
Regional Projects
On record in USA
Tillamook Air Museum
Oregon · Structural inspection
Tillamook Air Museum
One of the world’s largest clear-span timber structures
Structural inspection of a former blimp hangar, one of the world’s largest clear-span timber structures, read with stress-wave testing, no boring.
The Nest
Bradenton, Florida · 2022
The Nest
Natural science and learning center, Robinson Preserve
Original connectors and preservative treatments caused trouble by 2022. WRD inspection and wood-lab teams produced the results and assessment reports that guided the repair plan on cost, timeline, and quality, leading to species-matched glulam with concealed mortise-and-tenon connections.
For United States projects
Specified to the standards your engineers already work to
We inspect and rate to the codes your reviewers check for: for county engineers, DOTs, railroads, and federal agencies.
NDS
AASHTO LRFD
AREMA
AWPA
ASTM D07
IAS ISO 17020
IAS ISO 17025
ALSC
Your U.S. contact
Clay Hoger
Senior Timber Structure Engineer II
10466 Sunnyside Rd SE, Box 70
Jefferson, OR 97352