FHWA NBI 2024 Inspection record Public-domain dataset

T 308

Carrying T 308 over STREAM

0.9 MI E JCT CSAH 11 on, Olmsted, Minnesota

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
36 t Inventory load rating

Bridge Snapshot: T 308

The T 308 bridge in Olmsted, Minnesota carries T 308 over STREAM. It was built in 1987, making it 39 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 11.4 meters (37 feet) end to end. Daily traffic averages 75 vehicles, placing it in the lower-traffic tier of Minnesota bridges. It is owned and maintained by Town/Township Highway Agency.

The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 35.9 metric tons.

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

How T 308 compares

▲ 0.2
Load rating vs Minnesota average (35.7 t)
Bottom 41%
Lower load rating than 59% of Minnesota bridges
346
Bridges in Olmsted · 4 in Poor condition
T 308 35.9 t
Minnesota average 35.7 t

Live comparison across Minnesota.

Historical Sufficiency Rating

PlainBridge-computed
100.0 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
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 How the historical reference is calculated.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
6/9
Fair (5–6)
Inventory Load Rating
35.9 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1987
Material
Concrete
Number of Spans
2
Structure Length
11.4 m (37 ft)
Owner
Town/Township Highway Agency
Avg Daily Traffic
75 vehicles/day
Structure Number
R0190

How to read this record

This page shows what the last federal inspection recorded, not whether T 308 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 T 308 against other structures in Olmsted and across Minnesota. Minnesota 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 T 308?

T 308 in Olmsted, Minnesota on the FHWA's 0–9 scale.

How often is T 308 inspected?

T 308'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 75 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. T 308 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 T 308?

T 308 has an NBI inventory load rating of 35.9 metric tons.

Who is responsible for maintaining T 308?

T 308 is owned and maintained by Town/Township Highway Agency.

How old is T 308 and does age affect safety?

T 308 was built in 1987, making it 39 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.