Boyce Tower Rd
Carrying Boyce Tower Rd over CONWAY BAYOU
0.8 M W of US 61, Ascension, Louisiana
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
Boyce Tower Rd in Ascension, Louisiana sits above 12% of rated Louisiana bridges on inventory load rating (18 t), while its 1965 build year is earlier than 85% of Ascension's recorded-year cohort (216 bridges).
Boyce Tower Rd in Ascension, Louisiana is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1965, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 3. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure LA:610300000610342
INTERSTATE-ERA · TIMBER · LONG-SPAN-RUN · SUB-LED · TRACE-ADT · LIGHT-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- TIMBER Wood or timber
- LONG-SPAN-RUN 9 spans
- SUB-LED Substructure-led
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: Boyce Tower Rd
The Boyce Tower Rd bridge in Ascension, Louisiana carries Boyce Tower Rd over CONWAY BAYOU. It was built in 1965, making it 61 years old today. It was last reconstructed in 2012, extending its service life. The structure is built primarily of wood or timber and spans 9 sections, stretching 27.4 meters (90 feet) end to end. Daily traffic averages 5 vehicles, placing it in the lower-traffic tier of Louisiana bridges. It is owned and maintained by Other State Agencies.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 5/9, substructure at 3/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How Boyce Tower Rd compares
Age against the county: built in 1965, earlier than 184 of Ascension's 216 bridges with a recorded construction year (85%), against a county median build year of 1977. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Louisiana bridges with a recorded inventory load rating (12,682 of 12,698 rated).
Boyce Tower Rd vs every rated Louisiana bridge
Inventory load rating (metric tons), FHWA NBI, this state
18 Top 88% higher than 12% of 12,682 bridges
rated Louisiana bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Ascension inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 216 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1965
- Last Reconstructed
- 2012
- Material
- Wood or Timber
- Number of Spans
- 9
- Structure Length
- 27.4 m (90 ft)
- Deck Width
- 4.6 m (15 ft)
- Owner
- Other State Agencies
- Avg Daily Traffic
- 5 vehicles/day
- Structure Number
- 610300000610342
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • 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) is in poor condition (3/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
Boyce Tower Rd 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 Boyce Tower Rd against other structures in Ascension and across Louisiana. Louisiana 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 Boyce Tower Rd?
Boyce Tower Rd in Ascension, Louisiana has a deck rating of 7/9, superstructure rating of 5/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.
How often is Boyce Tower Rd inspected?
Boyce Tower Rd'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 5 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. Boyce Tower Rd 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 Boyce Tower Rd?
Boyce Tower Rd has an NBI inventory load rating of 18.1 metric tons.
Who is responsible for maintaining Boyce Tower Rd?
Boyce Tower Rd is owned and maintained by Other State Agencies.
How old is Boyce Tower Rd and does age affect safety?
Boyce Tower Rd was built in 1965, making it 61 years old and last reconstructed in 2012.
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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.