TWISSELMAN ROAD
Carrying TWISSELMAN ROAD over CALIFORNIA AQUEDUCT
2.7 MI EAST HOLLOWAY ROAD, Kern, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: TWISSELMAN ROAD
The TWISSELMAN ROAD bridge in Kern, California carries TWISSELMAN ROAD over CALIFORNIA AQUEDUCT. It was built in 1965, making it 61 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 68.9 meters (226 feet) end to end. Daily traffic averages 800 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by Other State Agencies.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 7/9, substructure at 5/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 35.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How TWISSELMAN ROAD 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 How the historical reference is calculated.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
- 1965
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 68.9 m (226 ft)
- Deck Width
- 9.9 m (32 ft)
- Owner
- Other State Agencies
- Avg Daily Traffic
- 800 vehicles/day
- Structure Number
- 50C0205
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 good condition (7/9), showing no significant deterioration.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
TWISSELMAN ROAD 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 TWISSELMAN ROAD against other structures in Kern 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 TWISSELMAN ROAD?
TWISSELMAN ROAD in Kern, California has a deck rating of 4/9, superstructure rating of 7/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is TWISSELMAN ROAD inspected?
TWISSELMAN ROAD'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 800 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. TWISSELMAN ROAD 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 TWISSELMAN ROAD?
TWISSELMAN ROAD has an NBI inventory load rating of 35.6 metric tons.
Who is responsible for maintaining TWISSELMAN ROAD?
TWISSELMAN ROAD is owned and maintained by Other State Agencies.
How old is TWISSELMAN ROAD and does age affect safety?
TWISSELMAN ROAD was built in 1965, making it 61 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.