SIMPSON LN
Carrying SIMPSON LN over YUBA RIVER
0.5 MI SE/O E 10TH ST, Yuba, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: SIMPSON LN
The SIMPSON LN bridge in Yuba, California carries SIMPSON LN over YUBA RIVER. It was built in 1957, making it 69 years old today. It was last reconstructed in 1987, extending its service life. The structure is built primarily of prestressed concrete and spans 5 sections, stretching 127.1 meters (417 feet) end to end. Daily traffic averages 11,630 vehicles, placing it in the heavily-trafficked tier of California bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 7/9, substructure at 4/9. 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 26.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How SIMPSON LN 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 How the historical reference is calculated.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
- 1957
- Last Reconstructed
- 1987
- Material
- Prestressed Concrete
- Number of Spans
- 5
- Structure Length
- 127.1 m (417 ft)
- Deck Width
- 13.3 m (44 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 11,630 vehicles/day
- Structure Number
- 16C0001
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear flagged for priority repair.
How to read this record
SIMPSON LN 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 SIMPSON LN against other structures in Yuba 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 SIMPSON LN?
SIMPSON LN in Yuba, California has a deck rating of 5/9, superstructure rating of 7/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is SIMPSON LN inspected?
SIMPSON LN'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 11,630 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SIMPSON LN 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 SIMPSON LN?
SIMPSON LN has an NBI inventory load rating of 26.9 metric tons.
Who is responsible for maintaining SIMPSON LN?
SIMPSON LN is owned and maintained by County Highway Agency.
How old is SIMPSON LN and does age affect safety?
SIMPSON LN was built in 1957, making it 69 years old and last reconstructed in 1987.
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.