I55-LL 297766D
Carrying I55-LL 297766D over ICG RAILROAD
1 MI W OF I240 JCT, Shelby, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I55-LL 297766D
The I55-LL 297766D bridge in Shelby, Tennessee carries I55-LL 297766D over ICG RAILROAD. It was built in 1963, making it 63 years old today. The structure is built primarily of steel continuous and spans 5 sections, stretching 161.2 meters (529 feet) end to end. Daily traffic averages 97,284 vehicles, placing it in the heavily-trafficked tier of Tennessee bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 7/9, 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 25.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I55-LL 297766D compares
Live comparison across Tennessee.
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 How the historical reference is calculated.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
- 1963
- Material
- Steel Continuous
- Number of Spans
- 5
- Structure Length
- 161.2 m (529 ft)
- Deck Width
- 14.3 m (47 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 97,284 vehicles/day
- Structure Number
- 79I00550048
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether I55-LL 297766D 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 I55-LL 297766D against other structures in Shelby and across Tennessee. Tennessee 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 I55-LL 297766D?
I55-LL 297766D in Shelby, Tennessee has a deck rating of 6/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is I55-LL 297766D inspected?
I55-LL 297766D'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 97,284 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I55-LL 297766D 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 I55-LL 297766D?
I55-LL 297766D has an NBI inventory load rating of 25.3 metric tons.
Who is responsible for maintaining I55-LL 297766D?
I55-LL 297766D is owned and maintained by State Highway Agency.
How old is I55-LL 297766D and does age affect safety?
I55-LL 297766D was built in 1963, making it 63 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.