FHWA NBI 2024 Inspection record Public-domain dataset

DUNHAM LAKE RD

Carrying DUNHAM LAKE RD over TITABAWASSEE RIVER

NESTER TWP SEC 26&27, Roscommon, Michigan

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
97 t Inventory load rating

Bridge Snapshot: DUNHAM LAKE RD

The DUNHAM LAKE RD bridge in Roscommon, Michigan carries DUNHAM LAKE RD over TITABAWASSEE RIVER. It was built in 1975, making it 51 years old today. The structure is built primarily of steel and spans 4 sections, stretching 13.6 meters (45 feet) end to end. Daily traffic averages 100 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 culvert at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 97.2 metric tons.

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

How DUNHAM LAKE RD compares

▲ 55.5
Load rating vs Michigan average (41.7 t)
Top 6%
Higher load rating than 94% of Michigan bridges
5
Bridges in Roscommon
DUNHAM LAKE RD 97.2 t
Michigan average 41.7 t

Live comparison across Michigan.

Historical Sufficiency Rating

PlainBridge-computed
96.8 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
14.8
Special reductions
−3.0

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 How the historical reference is calculated.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
97.2 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1975
Material
Steel
Number of Spans
4
Structure Length
13.6 m (45 ft)
Owner
County Highway Agency
Avg Daily Traffic
100 vehicles/day
Structure Number
000000000013144

How to read this record

This page shows what the last federal inspection recorded, not whether DUNHAM LAKE RD 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 DUNHAM LAKE RD against other structures in Roscommon 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 DUNHAM LAKE RD?

DUNHAM LAKE RD in Roscommon, Michigan on the FHWA's 0–9 scale.

How often is DUNHAM LAKE RD inspected?

DUNHAM LAKE RD'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 100 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. DUNHAM LAKE RD 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 DUNHAM LAKE RD?

DUNHAM LAKE RD has an NBI inventory load rating of 97.2 metric tons.

Who is responsible for maintaining DUNHAM LAKE RD?

DUNHAM LAKE RD is owned and maintained by County Highway Agency.

How old is DUNHAM LAKE RD and does age affect safety?

DUNHAM LAKE RD was built in 1975, making it 51 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.