FHWA NBI 2024 Inspection record Public-domain dataset

SR1559

Carrying SR1559 over LIMEKILN CREEK

.1 MI.E.JCT.SR1556, McDowell, North Carolina

Inventory: FHWA NBI 2024 · last ETL August 2026

FHWA NBI record, refreshed with each annual release.

Poor
13 t Inventory load rating Lower than 98% of rated North Carolina bridges

SR1559 in McDowell, North Carolina sits above 2% of rated North Carolina bridges on inventory load rating (13 t), while its 1960 build year is earlier than 69% of McDowell's recorded-year cohort (235 bridges).

SR1559 in McDowell, North Carolina is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1960, 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 NC:000000001110194

INTERSTATE-ERA · STEEL · MULTI-SPAN · SUB-LED · LOCAL-ADT · LIGHT-LOAD · CAT-POOR

  • INTERSTATE-ERA 1950–1979
  • STEEL Steel
  • MULTI-SPAN 2 spans
  • SUB-LED Substructure-led
  • LOCAL-ADT Local 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: SR1559

The SR1559 bridge in McDowell, North Carolina carries SR1559 over LIMEKILN CREEK. It was built in 1960, making it 66 years old today. The structure is built primarily of steel continuous and spans 2 sections, stretching 9.4 meters (31 feet) end to end. Daily traffic averages 70 vehicles, placing it in the lower-traffic tier of North Carolina bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 4/9, 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 SR1559 compares

▼ 31.9
Load rating vs North Carolina average (44.6 t; 19,160 of 19,210 rated)
235
Bridges in McDowell · 18 in Poor condition

Age against the county: built in 1960, earlier than 162 of McDowell's 235 bridges with a recorded construction year (69%), against a county median build year of 1983. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.

SR1559 12.7 t
North Carolina average (19,160 of 19,210 rated) 44.6 t

Live comparison across North Carolina bridges with a recorded inventory load rating (19,160 of 19,210 rated).

SR1559 vs every rated North Carolina bridge

Inventory load rating (metric tons), FHWA NBI, this state

13 Top 98% higher than 2% of 19,160 bridges

rated North Carolina 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

Deck
7/9
Good (7–9)
Superstructure
4/9
Poor (1–4)
Substructure
3/9
Poor (1–4)
Inventory Load Rating
12.7 t
NBI inventory level (metric tons)
Overall Condition
Poor

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.

McDowell inventory by recorded NBI category

Exclusive Good/Fair/Poor bands across all 235 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
1960
Material
Steel Continuous
Number of Spans
2
Structure Length
9.4 m (31 ft)
Deck Width
5.5 m (18 ft)
Owner
State Highway Agency
Avg Daily Traffic
70 vehicles/day
Structure Number
000000001110194

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 poor condition (4/9), showing advanced deterioration on the inspecting agency's 0-9 scale.
  • The substructure (piers and abutments) rates poor at 3/9, with advanced deterioration recorded on the latest inspection.

How to read this record

SR1559 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 SR1559 against other structures in McDowell and across North Carolina. North Carolina 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 SR1559?

SR1559 in McDowell, North Carolina has a deck rating of 7/9, superstructure rating of 4/9, and substructure rating of 3/9 on the FHWA's 0–9 scale.

How often is SR1559 inspected?

SR1559'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 70 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. SR1559 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 SR1559?

SR1559 has an NBI inventory load rating of 12.7 metric tons.

Who is responsible for maintaining SR1559?

SR1559 is owned and maintained by State Highway Agency.

How old is SR1559 and does age affect safety?

SR1559 was built in 1960, making it 66 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.

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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.