US Bridges

Richardson RD over S Prong ST Marys

PoorPosted for load

Baker County, Florida · 0.75MI South of CR 130 · Structure no. 274114

Built
1960
65 years old
Condition
Poor
inspected September 2023
Type
Slab
Concrete
Length
88 ft
7 main spans
Daily traffic
201
2023 count
Owner
County
County Highway Agency

About this bridge

Richardson RD over S Prong ST Marys is a concrete slab carrying Richardson RD over S Prong ST Marys in Baker County, Florida. It was built in 1960, so it is 65 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 201 vehicles a day, roughly 3% of them trucks, projected to reach 349 by 2042. The structure is 88 ft (26.7 m) long and 12 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRichardson RD
CrossesS Prong ST Marys
Location0.75MI South of CR 130
RouteCounty Highway 0
StateFlorida
Coordinates30.20603, -82.25181
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.7 US tons
Inventory rating17.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans7
Design loadUnknown
Structure length88 ft (26.7 m)
Longest span12 ft (3.8 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic201 (2023)
Projected traffic349 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Richardson RD over S Prong ST Marys built?

It was built in 1960, making it 65 years old in 2025.

What condition is Richardson RD over S Prong ST Marys in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does Richardson RD over S Prong ST Marys carry?

About 201 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Richardson RD over S Prong ST Marys?

The structure is 88 ft (26.7 m) long with a longest span of 12 ft (3.8 m) and a deck 12 ft wide.

Who owns Richardson RD over S Prong ST Marys?

It is owned by the County Highway Agency.