Structure 530054 · Jackson County, FL

Sr73 over I10 Sr8

Carries Sr73 over I10 Sr8, 2.0mi S Of Marianna Limit.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT280 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

280 ft end to end, longest span 99 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built197551 years old
Length279.9 ft85.3 m
Daily traffic4,900counted 2022
Last inspectedJune 2023every 24 months

Location

StateFlorida
CountyJackson
Location2.0mi S Of Marianna Limit
CarriesSr73
CrossesI10 Sr8
Coordinates30.73276, -85.23023

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length279.9 ft (85.3 m)
Max Span99.1 ft (30.2 m)
Deck Width46.3 ft (14.1 m)
Deck Area1202.7 sq m
Main Spans4
Year Built1975

Traffic

Avg Daily Traffic4,900 (2022)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number530054

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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