S COW MTN -8 MILE
Carrying S COW MTN -8 MILE over Panther Creek
11.4 miles SE of Ukiah, Lake, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: S COW MTN -8 MILE
The S COW MTN -8 MILE bridge in Lake, California carries S COW MTN -8 MILE over Panther Creek. It was built in 2000, making it 26 years old today. It was last reconstructed in 2021, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 13.6 meters (45 feet) end to end. Daily traffic averages 25 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by Bureau of Land Management.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 6/9, substructure at 5/9. 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 6.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How S COW MTN -8 MILE 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 How the historical reference is calculated.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
- 2000
- Last Reconstructed
- 2021
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 13.6 m (45 ft)
- Deck Width
- 3.0 m (10 ft)
- Owner
- Bureau of Land Management
- Avg Daily Traffic
- 25 vehicles/day
- Structure Number
- 0000000L1835958
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.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
S COW MTN -8 MILE 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 S COW MTN -8 MILE against other structures in Lake 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 S COW MTN -8 MILE?
S COW MTN -8 MILE in Lake, California has a deck rating of 4/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is S COW MTN -8 MILE inspected?
S COW MTN -8 MILE'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 25 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. S COW MTN -8 MILE 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 S COW MTN -8 MILE?
S COW MTN -8 MILE has an NBI inventory load rating of 6.5 metric tons.
Who is responsible for maintaining S COW MTN -8 MILE?
S COW MTN -8 MILE is owned and maintained by Bureau of Land Management.
How old is S COW MTN -8 MILE and does age affect safety?
S COW MTN -8 MILE was built in 2000, making it 26 years old and last reconstructed in 2021.
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.