I40
Carrying I40 over CANEY FORK RIVER
IN SMITH CO., Smith, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I40
The I40 bridge in Smith, Tennessee carries I40 over CANEY FORK RIVER. It was built in 1962, making it 64 years old today. It was last reconstructed in 1991, extending its service life. The structure is built primarily of prestressed concrete and spans 5 sections, stretching 120.4 meters (395 feet) end to end. Daily traffic averages 44,898 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 4/9, superstructure at 5/9, substructure at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 60.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I40 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 How the historical reference is calculated.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
- 1962
- Last Reconstructed
- 1991
- Material
- Prestressed Concrete
- Number of Spans
- 5
- Structure Length
- 120.4 m (395 ft)
- Deck Width
- 13.4 m (44 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 44,898 vehicles/day
- Structure Number
- 80I00400032
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) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
How to read this record
I40 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 I40 against other structures in Smith 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 I40?
I40 in Smith, Tennessee has a deck rating of 4/9, superstructure rating of 5/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is I40 inspected?
I40'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 44,898 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I40 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 I40?
I40 has an NBI inventory load rating of 60.9 metric tons.
Who is responsible for maintaining I40?
I40 is owned and maintained by State Highway Agency.
How old is I40 and does age affect safety?
I40 was built in 1962, making it 64 years old and last reconstructed in 1991.
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.