I-11SB
Carrying I-11SB over WASH
BOULDER BYPASS, Clark, Nevada
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I-11SB
The I-11SB bridge in Clark, Nevada carries I-11SB over WASH. It was built in 2018, making it 8 years old today. The structure is built primarily of steel continuous and spans 2 sections, stretching 100.1 meters (328 feet) end to end. Daily traffic averages 8,550 vehicles, placing it in the moderately-trafficked tier of Nevada bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure at 8/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 53.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I-11SB compares
Live comparison across Nevada.
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 How the historical reference is calculated.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
- 2018
- Material
- Steel Continuous
- Number of Spans
- 2
- Structure Length
- 100.1 m (328 ft)
- Deck Width
- 14.8 m (49 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 8,550 vehicles/day
- Structure Number
- B3177S
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • At 8/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • At 8/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether I-11SB is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare I-11SB against other structures in Clark and across Nevada. Nevada 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 I-11SB?
I-11SB in Clark, Nevada has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 8/9 on the FHWA's 0–9 scale.
How often is I-11SB inspected?
I-11SB'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 8,550 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-11SB is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for I-11SB?
I-11SB has an NBI inventory load rating of 53.5 metric tons.
Who is responsible for maintaining I-11SB?
I-11SB is owned and maintained by State Highway Agency.
How old is I-11SB and does age affect safety?
I-11SB was built in 2018, making it 8 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.