Structure 460088 · Bay County, FL

Sr77 over Mill Creek

Carries Sr77 over Mill Creek, 5.3mi. S. Of County Line.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 26 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.

Built1996rebuilt 2006
Length25.6 ft7.8 m
Daily traffic13,800counted 2022
Last inspectedMarch 2024every 24 months

Location

StateFlorida
CountyBay
Location5.3mi. S. Of County Line
CarriesSr77
CrossesMill Creek
Coordinates30.36381, -85.67142

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length25.6 ft (7.8 m)
Max Span7.9 ft (2.4 m)
Deck Area168.5 sq m
Main Spans3
Year Built1996 (reconstructed 2006)

Traffic

Avg Daily Traffic13,800 (2022)
Truck Traffic17%
Lanes On Bridge5

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number460088

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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