US Bridges

SR91 N/S Tpk 139.7 over Drainage Ditch

Fair

St. Lucie County, Florida · 1.3 MI N of Becker RD · Structure no. 940061

Built
1957
68 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
46,000
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR91 N/S Tpk 139.7 over Drainage Ditch is a concrete culvert carrying SR91 N/S Tpk 139.7 over Drainage Ditch in St. Lucie 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 46,000 vehicles a day, roughly 18% of them trucks, projected to reach 79,810 by 2042. The structure is 30 ft (9.1 m) long.

Location

Open in Google Maps
CarriesSR91 N/S Tpk 139.7
CrossesDrainage Ditch
Location1.3 MI N of Becker RD
RouteState Highway 91
CountySt. Lucie County
StateFlorida
Coordinates27.22709, -80.3416
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.8 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,000 (2023)
Projected traffic79,810 by 2042
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 SR91 N/S Tpk 139.7 over Drainage Ditch built?

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

What condition is SR91 N/S Tpk 139.7 over Drainage Ditch 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 December 2023.

How much traffic does SR91 N/S Tpk 139.7 over Drainage Ditch carry?

About 46,000 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is SR91 N/S Tpk 139.7 over Drainage Ditch?

The structure is 30 ft (9.1 m) long with a longest span of 10 ft (3 m).

Who owns SR91 N/S Tpk 139.7 over Drainage Ditch?

It is owned by the State Toll Authority.