Hwy 001 (I-5)
Hwy 001 (I-5) in 0.5 MI S Of Interstate BR, Multnomah County, Oregon received a condition grade of C (47/100). Built in 1916, the bridge carries 130K vehicles daily on Hwy 001 (I-5) over Jantzen Ped Tunnel.
Hwy 001 (I-5) carries a C on the BridgeSafety Condition Score with 47/100. 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 1916, making it 110 years old — well beyond the typical 50-year design life of bridges constructed in that era. Bridges of this vintage usually need substantial rehabilitation or replacement once their original components have aged out, regardless of current condition ratings. Hwy 001 (I-5) carries an average daily traffic count of 130,027 vehicles, with 8 lane(s) crossing Jantzen Ped Tunnel. 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 (I-5) is a 110-year-old bridge located 0.5 MI S Of Interstate BR in Multnomah County, Oregon. The bridge carries Hwy 001 (I-5) over Jantzen Ped Tunnel with 8 traffic lanes, handling approximately 130K vehicles per day. Built in 1916, the structure spans 8.8 meters.
The bridge received a Condition Grade of C (47/100) based on Federal Highway Administration inspection data. Its deck is rated 6/9 (fair), superstructure 6/9 (fair), and substructure 6/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
Hwy 001 (I-5) has a Condition Score of 47/100 (Grade C). Its deck is rated 6/9, superstructure 6/9, and substructure 6/9 on the NBI scale. The bridge is not classified as structurally deficient.
Hwy 001 (I-5) was built in 1916, making it 110 years old. The average bridge age in the United States is 48 years.
Hwy 001 (I-5) carries approximately 130K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 8.8 meters long and located on Hwy 001 (I-5) in 0.5 MI S Of Interstate BR, Multnomah County, Oregon.
No, Hwy 001 (I-5) 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 (I-5) is located 0.5 MI S Of Interstate BR in Multnomah County, Oregon. The bridge carries Hwy 001 (I-5) over Jantzen Ped Tunnel. Its coordinates are 45.612000, -122.678900. It is maintained by State Highway Agency.
Hwy 001 (I-5) carries Hwy 001 (I-5) over Jantzen Ped Tunnel. The bridge is 8.8 meters long and was built in 1916.
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.