Structure 720688 · Duval County, FL

Us-17 (sr-5) over Nassau River

Carries Us-17 (sr-5) over Nassau River, Us-17 Over Nassau River.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT636 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

636 ft end to end, longest span 105 ft: about 1.8 football fields. 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.

Built200125 years old
Length636.5 ft194 m
Daily traffic19,000counted 2023
Last inspectedJune 2024every 24 months

Location

StateFlorida
CountyDuval
LocationUs-17 Over Nassau River
CarriesUs-17 (sr-5)
CrossesNassau River
Coordinates30.57528, -81.60833

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length636.5 ft (194 m)
Max Span105.0 ft (32 m)
Deck Width46.6 ft (14.2 m)
Deck Area2754.8 sq m
Main Spans8
Year Built2001

Traffic

Avg Daily Traffic19,000 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number720688

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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