Structure 1149 · Branch County, MI

Log Road over South Br Swan Creek

Carries Log Road over South Br Swan Creek, Bethel Twp Sec 8.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 3 of 9.

How ratings work
Culvertsets the rating3/9 · Serious
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 3/9

A culvert 41 ft across with 3 openings. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built198244 years old
Length41.0 ft12.5 m
Daily traffic110counted 2004
Last inspectedOctober 2024every 12 months

Location

StateMichigan
CountyBranch
LocationBethel Twp Sec 8
CarriesLog Road
CrossesSouth Br Swan Creek
Coordinates41.87708, -85.13754

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length41.0 ft (12.5 m)
Max Span11.8 ft (3.6 m)
Deck Area113.8 sq m
Main Spans3
Year Built1982

Traffic

Avg Daily Traffic110 (2004)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000001149

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.

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