Structure 720119 · Duval County, FL

Sr-21 (blanding) over Hamilton St.

Carries Sr-21 (blanding) over Hamilton St., Blanding Blvd. / Hamilton.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT196 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

196 ft end to end, longest span 97 ft: about 3 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.

Built196165 years old
Length195.9 ft59.7 m
Daily traffic28,500counted 2023
Last inspectedMay 2024every 24 months

Location

StateFlorida
CountyDuval
LocationBlanding Blvd. / Hamilton
CarriesSr-21 (blanding)
CrossesHamilton St.
Coordinates30.29454, -81.72197

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length195.9 ft (59.7 m)
Max Span97.1 ft (29.6 m)
Deck Width79.1 ft (24.1 m)
Deck Area1438.8 sq m
Main Spans3
Year Built1961

Traffic

Avg Daily Traffic28,500 (2023)
Truck Traffic4%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number720119

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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