US Bridges

CR 712 150.3 over SR 91 Tpk

Fair

St. Lucie County, Florida · 1.9 Miles S of Exit 152 · Structure no. 940050

Built
1957
68 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
174 ft
4 main spans
Daily traffic
18,500
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

CR 712 150.3 over SR 91 Tpk is a steel stringer/multi-beam or girder carrying CR 712 150.3 over SR 91 Tpk 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 18,500 vehicles a day, roughly 18% of them trucks, projected to reach 32,098 by 2042. The structure is 174 ft (53 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCR 712 150.3
CrossesSR 91 Tpk
Location1.9 Miles S of Exit 152
RouteCounty Highway 712
CountySt. Lucie County
StateFlorida
Coordinates27.37451, -80.38397
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.2 US tons
Inventory rating27.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length174 ft (53 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,500 (2023)
Projected traffic32,098 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$150,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was CR 712 150.3 over SR 91 Tpk built?

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

What condition is CR 712 150.3 over SR 91 Tpk 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 CR 712 150.3 over SR 91 Tpk carry?

About 18,500 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is CR 712 150.3 over SR 91 Tpk?

The structure is 174 ft (53 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns CR 712 150.3 over SR 91 Tpk?

It is owned by the State Toll Authority.