US Bridges

SE County Line RD over N Fork Loxahatchee River

PoorPosted for load

Martin County, Florida · 2.5MI W of US-1 · Structure no. 894021

Built
1974
51 years old
Condition
Poor
inspected December 2023
Type
Slab
Prestressed Concrete
Length
181 ft
6 main spans
Daily traffic
3,500
2023 count
Owner
County
County Highway Agency

About this bridge

SE County Line RD over N Fork Loxahatchee River is a prestressed concrete slab carrying SE County Line RD over N Fork Loxahatchee River in Martin County, Florida. It was built in 1974, so it is 51 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 3 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 3,500 vehicles a day, roughly 4% of them trucks, projected to reach 6,072 by 2045. The structure is 181 ft (55.2 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSE County Line RD
CrossesN Fork Loxahatchee River
Location2.5MI W of US-1
RouteCounty Highway 0
StateFlorida
Coordinates26.98523, -80.11496
Functional classUrban Collector

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating26.3 US tons
Inventory rating12.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic6,072 by 2045
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 SE County Line RD over N Fork Loxahatchee River built?

It was built in 1974, making it 51 years old in 2025.

What condition is SE County Line RD over N Fork Loxahatchee River 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 December 2023.

How much traffic does SE County Line RD over N Fork Loxahatchee River carry?

About 3,500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SE County Line RD over N Fork Loxahatchee River?

The structure is 181 ft (55.2 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns SE County Line RD over N Fork Loxahatchee River?

It is owned by the County Highway Agency.