FHWA NBI 2024 Inspection record Public-domain dataset

SARAH DRIVE

Carrying SARAH DRIVE over DRAINAGE

CITY CULVERT NO. 55C, Black Hawk, Iowa

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
33 t Inventory load rating

Bridge Snapshot: SARAH DRIVE

The SARAH DRIVE bridge in Black Hawk, Iowa carries SARAH DRIVE over DRAINAGE. It was built in 1993, making it 33 years old today. The structure is built primarily of concrete continuous and spans 4 sections, stretching 13.4 meters (44 feet) end to end. Daily traffic averages 2,967 vehicles, placing it in the moderately-trafficked tier of Iowa bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show culvert at 6/9. 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 32.7 metric tons.

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

How SARAH DRIVE compares

▲ 1.8
Load rating vs Iowa average (30.9 t)
Top 44%
Higher load rating than 56% of Iowa bridges
411
Bridges in Black Hawk · 24 in Poor condition
SARAH DRIVE 32.7 t
Iowa average 30.9 t

Live comparison across Iowa.

Historical Sufficiency Rating

PlainBridge-computed
99.7 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
14.7
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 How the historical reference is calculated.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
6/9
Fair (5–6)
Inventory Load Rating
32.7 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1993
Material
Concrete Continuous
Number of Spans
4
Structure Length
13.4 m (44 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
2,967 vehicles/day
Structure Number
000000000504360

How to read this record

This page shows what the last federal inspection recorded, not whether SARAH DRIVE 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 SARAH DRIVE 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 SARAH DRIVE?

SARAH DRIVE in Black Hawk, Iowa on the FHWA's 0–9 scale.

How often is SARAH DRIVE inspected?

SARAH DRIVE'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 2,967 vehicles per day.

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

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

SARAH DRIVE has an NBI inventory load rating of 32.7 metric tons.

Who is responsible for maintaining SARAH DRIVE?

SARAH DRIVE is owned and maintained by City/Municipal Highway Agency.

How old is SARAH DRIVE and does age affect safety?

SARAH DRIVE was built in 1993, making it 33 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.