US Bridges

SR 9B NB over Durbin Creek

Good

St. Johns County, Florida · SR 9B Nb/Durbin Creek · Structure no. 780133

Built
2018
7 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
833 ft
10 main spans
Daily traffic
27,750
2023 count
Owner
State
State Highway Agency

About this bridge

SR 9B NB over Durbin Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 9B NB over Durbin Creek in St. Johns County, Florida. It was built in 2018, so it is 7 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 27,750 vehicles a day, roughly 3% of them trucks, projected to reach 48,146 by 2042. The structure is 833 ft (253.9 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 9B NB
CrossesDurbin Creek
LocationSR 9B Nb/Durbin Creek
RouteState Highway 9B
StateFlorida
Coordinates30.0855, -81.52249
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.5 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHL 93
Structure length833 ft (253.9 m)
Longest span83 ft (25.4 m)
Deck width55 ft (16.8 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deck18 ft (5.6 m)

Traffic and service

Average daily traffic27,750 (2023)
Projected traffic48,146 by 2042
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 9B NB over Durbin Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR 9B NB over Durbin Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does SR 9B NB over Durbin Creek carry?

About 27,750 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SR 9B NB over Durbin Creek?

The structure is 833 ft (253.9 m) long with a longest span of 83 ft (25.4 m) and a deck 55 ft wide.

Who owns SR 9B NB over Durbin Creek?

It is owned by the State Highway Agency.