FHWA NBI 2024 Inspection record Public-domain dataset

4700 RD Mile 27

Carrying 4700 RD Mile 27 over SALT CREEK

3.2N 4.0E OF SYCAMORE, Montgomery, Kansas

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
10 t Inventory load rating

Bridge Snapshot: 4700 RD Mile 27

The 4700 RD Mile 27 bridge in Montgomery, Kansas carries 4700 RD Mile 27 over SALT CREEK. It was built in 1930, making it 96 years old today. The structure is built primarily of concrete and spans 1 section, stretching 14.5 meters (48 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of Kansas bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 10.1 metric tons.

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

How 4700 RD Mile 27 compares

▼ 19.0
Load rating vs Kansas average (29.1 t)
Bottom 6%
Lower load rating than 94% of Kansas bridges
296
Bridges in Montgomery · 18 in Poor condition
4700 RD Mile 27 10.1 t
Kansas average 29.1 t

Live comparison across Kansas.

Historical Sufficiency Rating

PlainBridge-computed
28.5 / 100 - historical 20–49.9 band
Structural adequacy /55
0.0
Serviceability /30
13.5
Essentiality /15
15.0
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 How the historical reference is calculated.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
4/9
Poor (1–4)
Inventory Load Rating
10.1 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1930
Material
Concrete
Number of Spans
1
Structure Length
14.5 m (48 ft)
Deck Width
4.9 m (16 ft)
Owner
County Highway Agency
Avg Daily Traffic
20 vehicles/day
Structure Number
000631005006608

How to read this record

4700 RD Mile 27 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 4700 RD Mile 27 against other structures in Montgomery and across Kansas. Kansas 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 4700 RD Mile 27?

4700 RD Mile 27 in Montgomery, Kansas on the FHWA's 0–9 scale.

How often is 4700 RD Mile 27 inspected?

4700 RD Mile 27'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 20 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. 4700 RD Mile 27 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 4700 RD Mile 27?

4700 RD Mile 27 has an NBI inventory load rating of 10.1 metric tons.

Who is responsible for maintaining 4700 RD Mile 27?

4700 RD Mile 27 is owned and maintained by County Highway Agency.

How old is 4700 RD Mile 27 and does age affect safety?

4700 RD Mile 27 was built in 1930, making it 96 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.