US Bridges

CR 250 over Mid-Prong ST Marys River

FairPosted for load

Baker County, Florida · 4.7 MI SW of CR 125 · Structure no. 270029

Built
1957
68 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
165 ft
11 main spans
Daily traffic
200
2023 count
Owner
County
County Highway Agency

About this bridge

CR 250 over Mid-Prong ST Marys River is a concrete slab carrying CR 250 over Mid-Prong ST Marys River in Baker County, Florida. It was built in 1957, so it is 68 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 10% of them trucks, projected to reach 347 by 2042. The structure is 165 ft (50.3 m) long and 26 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCR 250
CrossesMid-Prong ST Marys River
Location4.7 MI SW of CR 125
RouteCounty Highway 250
CountyBaker County
StateFlorida
Coordinates30.38556, -82.33194
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.2 US tons
Inventory rating19.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadH 15
Structure length165 ft (50.3 m)
Longest span15 ft (4.6 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic347 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 250 over Mid-Prong ST Marys River built?

It was built in 1957, making it 68 years old in 2025.

What condition is CR 250 over Mid-Prong ST Marys River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does CR 250 over Mid-Prong ST Marys River carry?

About 200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CR 250 over Mid-Prong ST Marys River?

The structure is 165 ft (50.3 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.

Who owns CR 250 over Mid-Prong ST Marys River?

It is owned by the County Highway Agency.