FHWA NBI 2024 Inspection record Public-domain dataset

INDIAN TRAIL

Carrying INDIAN TRAIL over POLLY ANN TRAIL

IN SUBDIVISION SEC 3, Oakland, Michigan

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
51 t Inventory load rating

Bridge Snapshot: INDIAN TRAIL

The INDIAN TRAIL bridge in Oakland, Michigan carries INDIAN TRAIL over POLLY ANN TRAIL. It was built in 1999, making it 27 years old today. The structure is built primarily of wood or timber and spans 1 section, stretching 8.4 meters (28 feet) end to end. Daily traffic averages 500 vehicles, placing it in the lower-traffic tier of Michigan bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 51.0 metric tons.

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

How INDIAN TRAIL compares

▲ 9.3
Load rating vs Michigan average (41.7 t)
Top 24%
Higher load rating than 76% of Michigan bridges
49
Bridges in Oakland · 3 in Poor condition
INDIAN TRAIL 51.0 t
Michigan average 41.7 t

Live comparison across Michigan.

Historical Sufficiency Rating

PlainBridge-computed
87.5 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
19.7
Essentiality /15
14.9
Special reductions
−2.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Deck
7/9
Good (7–9)
Superstructure
7/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
51.0 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1999
Material
Wood or Timber
Number of Spans
1
Structure Length
8.4 m (28 ft)
Deck Width
8.2 m (27 ft)
Owner
County Highway Agency
Avg Daily Traffic
500 vehicles/day
Structure Number
000000000013596

Condition Analysis

  • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
  • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
  • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.

How to read this record

This page shows what the last federal inspection recorded, not whether INDIAN TRAIL 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 INDIAN TRAIL against other structures in Oakland and across Michigan. Michigan 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 INDIAN TRAIL?

INDIAN TRAIL in Oakland, Michigan has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is INDIAN TRAIL inspected?

INDIAN TRAIL'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 500 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. INDIAN TRAIL 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 INDIAN TRAIL?

INDIAN TRAIL has an NBI inventory load rating of 51.0 metric tons.

Who is responsible for maintaining INDIAN TRAIL?

INDIAN TRAIL is owned and maintained by County Highway Agency.

How old is INDIAN TRAIL and does age affect safety?

INDIAN TRAIL was built in 1999, making it 27 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.