HARRISON CO RT 18
Carrying HARRISON CO RT 18 over TENMILE CREEK
0.05 MI SOUTH WV RT 20, Harrison, West Virginia
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: HARRISON CO RT 18
The HARRISON CO RT 18 bridge in Harrison, West Virginia carries HARRISON CO RT 18 over TENMILE CREEK. It was built in 1979, making it 47 years old today. The structure is built primarily of steel continuous and spans 2 sections, stretching 31.7 meters (104 feet) end to end. Daily traffic averages 1,800 vehicles, placing it in the moderately-trafficked tier of West Virginia 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 7/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 38.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How HARRISON CO RT 18 compares
Live comparison across West Virginia.
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 How the historical reference is calculated.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
- 1979
- Material
- Steel Continuous
- Number of Spans
- 2
- Structure Length
- 31.7 m (104 ft)
- Deck Width
- 9.7 m (32 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 1,800 vehicles/day
- Structure Number
- 00000000017A065
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 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether HARRISON CO RT 18 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 HARRISON CO RT 18 against other structures in Harrison and across West Virginia. West Virginia 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 HARRISON CO RT 18?
HARRISON CO RT 18 in Harrison, West Virginia has a deck rating of 6/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is HARRISON CO RT 18 inspected?
HARRISON CO RT 18'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 1,800 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HARRISON CO RT 18 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 HARRISON CO RT 18?
HARRISON CO RT 18 has an NBI inventory load rating of 38.1 metric tons.
Who is responsible for maintaining HARRISON CO RT 18?
HARRISON CO RT 18 is owned and maintained by State Highway Agency.
How old is HARRISON CO RT 18 and does age affect safety?
HARRISON CO RT 18 was built in 1979, making it 47 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.