FHWA NBI 2024 Inspection record Public-domain dataset

N ELK RUN RD

Carrying N ELK RUN RD over TRIB TO ELK RUN CREEK

89-12-03-02-10, Black Hawk, Iowa

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
35 t Inventory load rating

Bridge Snapshot: N ELK RUN RD

The N ELK RUN RD bridge in Black Hawk, Iowa carries N ELK RUN RD over TRIB TO ELK RUN CREEK. It was built in 1974, making it 52 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 1,463 vehicles, placing it in the moderately-trafficked tier of Iowa bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 35.0 metric tons.

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

How N ELK RUN RD compares

▲ 4.1
Load rating vs Iowa average (30.9 t)
Top 28%
Higher load rating than 72% of Iowa bridges
411
Bridges in Black Hawk · 24 in Poor condition
N ELK RUN RD 35.0 t
Iowa average 30.9 t

Live comparison across Iowa.

Historical Sufficiency Rating

PlainBridge-computed
99.8 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
14.8
Special reductions
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 How the historical reference is calculated.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

Culvert
7/9
Good (7–9)
Inventory Load Rating
35.0 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1974
Material
Concrete Continuous
Number of Spans
2
Structure Length
6.7 m (22 ft)
Owner
County Highway Agency
Avg Daily Traffic
1,463 vehicles/day
Structure Number
000000000075721

How to read this record

This page shows what the last federal inspection recorded, not whether N ELK RUN RD 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 N ELK RUN RD against other structures in Black Hawk and across Iowa. Iowa 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 N ELK RUN RD?

N ELK RUN RD in Black Hawk, Iowa on the FHWA's 0–9 scale.

How often is N ELK RUN RD inspected?

N ELK RUN 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 1,463 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. N ELK RUN RD is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for N ELK RUN RD?

N ELK RUN RD has an NBI inventory load rating of 35.0 metric tons.

Who is responsible for maintaining N ELK RUN RD?

N ELK RUN RD is owned and maintained by County Highway Agency.

How old is N ELK RUN RD and does age affect safety?

N ELK RUN RD was built in 1974, making it 52 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.