TWIN LAKES DRIVE
Carrying TWIN LAKES DRIVE over SALMON CREEK
MILE POINT 1.6, Juneau City and, Alaska
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: TWIN LAKES DRIVE
The TWIN LAKES DRIVE bridge in Juneau City and, Alaska carries TWIN LAKES DRIVE over SALMON CREEK. It was built in 1989, making it 37 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 38.4 meters (126 feet) end to end. Daily traffic averages 2,450 vehicles, placing it in the moderately-trafficked tier of Alaska 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. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 39.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How TWIN LAKES DRIVE compares
Live comparison across Alaska.
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 How the historical reference is calculated.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
- 1989
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 38.4 m (126 ft)
- Deck Width
- 19.5 m (64 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 2,450 vehicles/day
- Structure Number
- 0787
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • At 8/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • The substructure (piers and abutments) rates good at 8/9, with no significant deterioration on file.
How to read this record
This page shows what the last federal inspection recorded, not whether TWIN LAKES DRIVE 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 TWIN LAKES DRIVE against other structures in Juneau City and and across Alaska. Alaska 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 TWIN LAKES DRIVE?
TWIN LAKES DRIVE in Juneau City and, Alaska 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 TWIN LAKES DRIVE inspected?
TWIN LAKES DRIVE'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 2,450 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. TWIN LAKES DRIVE 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 TWIN LAKES DRIVE?
TWIN LAKES DRIVE has an NBI inventory load rating of 39.6 metric tons.
Who is responsible for maintaining TWIN LAKES DRIVE?
TWIN LAKES DRIVE is owned and maintained by State Highway Agency.
How old is TWIN LAKES DRIVE and does age affect safety?
TWIN LAKES DRIVE was built in 1989, making it 37 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.