US Bridges

CR 229 over S. Prong St. Marys Rive

Good

Baker County, Florida · 2.6 MI South of I-10 · Structure no. 274154

Built
2013
12 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
210 ft
4 main spans
Daily traffic
1,900
2024 count
Owner
County
County Highway Agency

About this bridge

CR 229 over S. Prong St. Marys Rive is a prestressed concrete stringer/multi-beam or girder carrying CR 229 over S. Prong St. Marys Rive in Baker County, Florida. It was built in 2013, so it is 12 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,900 vehicles a day, roughly 10% of them trucks, projected to reach 3,297 by 2042. The structure is 210 ft (64 m) long and 47 ft wide. If it were closed, the detour would be 20.5 mi (33 km).

Location

Open in Google Maps
CarriesCR 229
CrossesS. Prong St. Marys Rive
Location2.6 MI South of I-10
RouteCounty Highway 229
CountyBaker County
StateFlorida
Coordinates30.20474, -82.26341
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 19 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.7 US tons
Inventory rating65.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length210 ft (64 m)
Longest span52 ft (16 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic1,900 (2024)
Projected traffic3,297 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed20.5 mi (33 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 229 over S. Prong St. Marys Rive built?

It was built in 2013, making it 12 years old in 2025.

What condition is CR 229 over S. Prong St. Marys Rive 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 February 2024.

How much traffic does CR 229 over S. Prong St. Marys Rive carry?

About 1,900 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is CR 229 over S. Prong St. Marys Rive?

The structure is 210 ft (64 m) long with a longest span of 52 ft (16 m) and a deck 47 ft wide.

Who owns CR 229 over S. Prong St. Marys Rive?

It is owned by the County Highway Agency.