US Bridges

SR 91 Tpk 120.25 over Drainage Canal

Fair

Martin County, Florida · 2.5MI North of CO Line · Structure no. 890073

Built
1957
68 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
52,700
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 91 Tpk 120.25 over Drainage Canal is a concrete culvert carrying SR 91 Tpk 120.25 over Drainage Canal in Martin 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 52,700 vehicles a day, roughly 20% of them trucks, projected to reach 91,434 by 2044. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 91 Tpk 120.25
CrossesDrainage Canal
Location2.5MI North of CO Line
RouteState Highway 91
CountyMartin County
StateFlorida
Coordinates26.98633, -80.18881
Functional classRural Principal Arterial - Other

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 inspectionNovember 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 rating72.4 US tons
Inventory rating43.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,700 (2022)
Projected traffic91,434 by 2044
Trucks20%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
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 SR 91 Tpk 120.25 over Drainage Canal built?

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

What condition is SR 91 Tpk 120.25 over Drainage Canal 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 November 2023.

How much traffic does SR 91 Tpk 120.25 over Drainage Canal carry?

About 52,700 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is SR 91 Tpk 120.25 over Drainage Canal?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m).

Who owns SR 91 Tpk 120.25 over Drainage Canal?

It is owned by the State Toll Authority.