OLD GLENN, PALMER
Carrying OLD GLENN, PALMER over KNIK RIVER
MILE POINT 8.7, Matanuska-Susitna, Alaska
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: OLD GLENN, PALMER
The OLD GLENN, PALMER bridge in Matanuska-Susitna, Alaska carries OLD GLENN, PALMER over KNIK RIVER. It was built in 1975, making it 51 years old today. The structure is built primarily of steel continuous and spans 3 sections, stretching 154.1 meters (506 feet) end to end. Daily traffic averages 1,380 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 6/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 30.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How OLD GLENN, PALMER 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 How the historical reference is calculated.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
- 1975
- Material
- Steel Continuous
- Number of Spans
- 3
- Structure Length
- 154.1 m (506 ft)
- Deck Width
- 8.8 m (29 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 1,380 vehicles/day
- Structure Number
- 0539
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.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
This page shows what the last federal inspection recorded, not whether OLD GLENN, PALMER 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 OLD GLENN, PALMER against other structures in Matanuska-Susitna 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 OLD GLENN, PALMER?
OLD GLENN, PALMER in Matanuska-Susitna, Alaska has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is OLD GLENN, PALMER inspected?
OLD GLENN, PALMER'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 1,380 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. OLD GLENN, PALMER is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for OLD GLENN, PALMER?
OLD GLENN, PALMER has an NBI inventory load rating of 30.6 metric tons.
Who is responsible for maintaining OLD GLENN, PALMER?
OLD GLENN, PALMER is owned and maintained by State Highway Agency.
How old is OLD GLENN, PALMER and does age affect safety?
OLD GLENN, PALMER was built in 1975, making it 51 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.