Structure 5872 · Livingston County, MI

Dunham Road over Ore Creek

Carries Dunham Road over Ore Creek, Sec 15-22 Hartland Twp.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

20 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1923103 years old
Length20.3 ft6.2 m
Daily traffic730counted 2013
Last inspectedOctober 2023every 24 months

Location

StateMichigan
CountyLivingston
LocationSec 15-22 Hartland Twp
CarriesDunham Road
CrossesOre Creek
Coordinates42.64790, -83.73568

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length20.3 ft (6.2 m)
Max Span17.7 ft (5.4 m)
Deck Width25.9 ft (7.9 m)
Deck Area49.0 sq m
Main Spans1
Year Built1923

Traffic

Avg Daily Traffic730 (2013)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000005872

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges