FHWA NBI 2024 Inspection record Public-domain dataset

HIGHWAY S6G

Carrying HIGHWAY S6G over PRAIRIE CREEK

078211202, Jasper, Iowa

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
33 t Inventory load rating

Bridge Snapshot: HIGHWAY S6G

The HIGHWAY S6G bridge in Jasper, Iowa carries HIGHWAY S6G over PRAIRIE CREEK. It was built in 2012, making it 14 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 540 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. All reported major components score above the Poor 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 HIGHWAY S6G compares

▲ 1.8
Load rating vs Iowa average (30.9 t)
Top 44%
Higher load rating than 56% of Iowa bridges
321
Bridges in Jasper · 107 in Poor condition
HIGHWAY S6G 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 How the historical reference is calculated.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
8/9
Good (7–9)
Inventory Load Rating
32.7 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2012
Material
Concrete
Number of Spans
2
Structure Length
6.4 m (21 ft)
Owner
County Highway Agency
Avg Daily Traffic
540 vehicles/day
Structure Number
000000000195991

How to read this record

This page shows what the last federal inspection recorded, not whether HIGHWAY S6G 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 HIGHWAY S6G against other structures in Jasper 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 HIGHWAY S6G?

HIGHWAY S6G in Jasper, Iowa on the FHWA's 0–9 scale.

How often is HIGHWAY S6G inspected?

HIGHWAY S6G'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 540 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. HIGHWAY S6G 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 HIGHWAY S6G?

HIGHWAY S6G has an NBI inventory load rating of 32.7 metric tons.

Who is responsible for maintaining HIGHWAY S6G?

HIGHWAY S6G is owned and maintained by County Highway Agency.

How old is HIGHWAY S6G and does age affect safety?

HIGHWAY S6G was built in 2012, making it 14 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.