Structure 2711 · Genesee County, MI

Hill Road over Swartz Creek

Carries Hill Road over Swartz Creek, Bet Jennings & Torrey RD.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

46 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built1966rebuilt 1994
Length45.9 ft14 m
Daily traffic12,640counted 2012
Last inspectedNovember 2024every 24 months

Location

StateMichigan
CountyGenesee
LocationBet Jennings & Torrey RD
CarriesHill Road
CrossesSwartz Creek
Coordinates42.94376, -83.74412

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length45.9 ft (14 m)
Max Span42.0 ft (12.8 m)
Deck Width72.8 ft (22.2 m)
Deck Area310.8 sq m
Main Spans1
Year Built1966 (reconstructed 1994)

Traffic

Avg Daily Traffic12,640 (2012)
Truck Traffic5%
Lanes On Bridge5

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000002711

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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