Structure 780133 · St. Johns County, FL

SR 9b NB over Durbin Creek

Carries SR 9b NB over Durbin Creek, SR 9b Nb/durbin Creek.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT833 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

833 ft end to end, longest span 83 ft: about 2.3 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.

Built20188 years old
Length833.0 ft253.9 m
Daily traffic27,750counted 2023
Last inspectedApril 2024every 24 months

Location

StateFlorida
CountySt. Johns
LocationSR 9b Nb/durbin Creek
CarriesSR 9b NB
CrossesDurbin Creek
Coordinates30.08550, -81.52249

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length833.0 ft (253.9 m)
Max Span83.3 ft (25.4 m)
Deck Width55.1 ft (16.8 m)
Deck Area4265.5 sq m
Main Spans10
Year Built2018

Traffic

Avg Daily Traffic27,750 (2023)
Truck Traffic3%
Lanes On Bridge3

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number780133

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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