Hwy 001
Hwy 001 in At Willamette River, Clackamas County, Oregon received a condition grade of C (48/100). Built in 1953, the bridge carries 127K vehicles daily on Hwy 001 over Willamette River.
Hwy 001 carries a C on the BridgeSafety Condition Score with 48/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1953 and is now 73 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. Hwy 001 carries an average daily traffic count of 127,233 vehicles, with 7 lane(s) crossing Willamette River. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
Hwy 001 is a 73-year-old bridge located At Willamette River in Clackamas County, Oregon. The bridge carries Hwy 001 over Willamette River with 7 traffic lanes, handling approximately 127K vehicles per day. Built in 1953 and reconstructed in 1970, the structure spans 346.5 meters.
The bridge received a Condition Grade of C (48/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 5/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
Hwy 001 has a Condition Score of 48/100 (Grade C). Its deck is rated 5/9, superstructure 5/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
Hwy 001 was built in 1953 and reconstructed in 1970, making it 73 years old. The average bridge age in the United States is 48 years.
Hwy 001 carries approximately 127K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 346.5 meters long and located on Hwy 001 in At Willamette River, Clackamas County, Oregon.
No, Hwy 001 is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
Hwy 001 is located At Willamette River in Clackamas County, Oregon. The bridge carries Hwy 001 over Willamette River. Its coordinates are 45.291753, -122.769322. It is maintained by State Highway Agency.
Hwy 001 carries Hwy 001 over Willamette River. The bridge is 346.5 meters long and was built in 1953, with reconstruction in 1970.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.