FHWA NBI 2024 Inspection record Public-domain dataset

DRY RIDGE-MOUNT ZI

Carrying DRY RIDGE-MOUNT ZI over ARNOLDS CREEK

.8 MI S OF JCT KY 1994, Grant, Kentucky

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
50 t Inventory load rating

Bridge Snapshot: DRY RIDGE-MOUNT ZI

The DRY RIDGE-MOUNT ZI bridge in Grant, Kentucky carries DRY RIDGE-MOUNT ZI over ARNOLDS CREEK. It was built in 1965, making it 61 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 10.7 meters (35 feet) end to end. Daily traffic averages 139 vehicles, placing it in the lower-traffic tier of Kentucky bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 6/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 50.3 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How DRY RIDGE-MOUNT ZI compares

▲ 11.1
Load rating vs Kentucky average (39.2 t)
Top 19%
Higher load rating than 81% of Kentucky bridges
79
Bridges in Grant · 5 in Poor condition
DRY RIDGE-MOUNT ZI 50.3 t
Kentucky average 39.2 t

Live comparison across Kentucky.

Historical Sufficiency Rating

PlainBridge-computed
47.7 / 100 - historical 20–49.9 band
Structural adequacy /55
30.0
Serviceability /30
6.0
Essentiality /15
14.7
Special reductions
−3.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Deck
4/9
Poor (1–4)
Superstructure
4/9
Poor (1–4)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
50.3 t
NBI inventory level (metric tons)
Overall Condition
Poor

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1965
Material
Prestressed Concrete
Number of Spans
1
Structure Length
10.7 m (35 ft)
Deck Width
6.4 m (21 ft)
Owner
County Highway Agency
Avg Daily Traffic
139 vehicles/day
Structure Number
041C00001N

Condition Analysis

  • The deck (driving surface) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
  • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
  • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.

How to read this record

DRY RIDGE-MOUNT ZI 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 DRY RIDGE-MOUNT ZI against other structures in Grant and across Kentucky. Kentucky 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 DRY RIDGE-MOUNT ZI?

DRY RIDGE-MOUNT ZI in Grant, Kentucky has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is DRY RIDGE-MOUNT ZI inspected?

DRY RIDGE-MOUNT ZI'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 139 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. DRY RIDGE-MOUNT ZI 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 DRY RIDGE-MOUNT ZI?

DRY RIDGE-MOUNT ZI has an NBI inventory load rating of 50.3 metric tons.

Who is responsible for maintaining DRY RIDGE-MOUNT ZI?

DRY RIDGE-MOUNT ZI is owned and maintained by County Highway Agency.

How old is DRY RIDGE-MOUNT ZI and does age affect safety?

DRY RIDGE-MOUNT ZI was built in 1965, making it 61 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

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.