E SIDE POTTER VLY
Carrying E SIDE POTTER VLY over EAST FORK RUSSIAN RIVER
2.2 MI N RTE 20, Mendocino, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: E SIDE POTTER VLY
The E SIDE POTTER VLY bridge in Mendocino, California carries E SIDE POTTER VLY over EAST FORK RUSSIAN RIVER. It was built in 1973, making it 53 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 56.1 meters (184 feet) end to end. Daily traffic averages 2,352 vehicles, placing it in the moderately-trafficked tier of California bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 6/9, substructure at 7/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 59.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How E SIDE POTTER VLY compares
Live comparison across California.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1973
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 56.1 m (184 ft)
- Deck Width
- 11.5 m (38 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 2,352 vehicles/day
- Structure Number
- 10C0103
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear flagged for priority repair.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
How to read this record
E SIDE POTTER VLY is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare E SIDE POTTER VLY against other structures in Mendocino and across California. California bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for E SIDE POTTER VLY?
E SIDE POTTER VLY in Mendocino, California has a deck rating of 4/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is E SIDE POTTER VLY inspected?
E SIDE POTTER VLY's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 2,352 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. E SIDE POTTER VLY is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for E SIDE POTTER VLY?
E SIDE POTTER VLY has an NBI inventory load rating of 59.9 metric tons.
Who is responsible for maintaining E SIDE POTTER VLY?
E SIDE POTTER VLY is owned and maintained by County Highway Agency.
How old is E SIDE POTTER VLY and does age affect safety?
E SIDE POTTER VLY was built in 1973, making it 53 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.