US Bridges

SR-91 Tpk 134.1 over Danforth Creek

Good

Martin County, Florida · 0.51 Mi. S of SR-714 · Structure no. 890067

Built
1957
68 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
52,700
2023 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR-91 Tpk 134.1 over Danforth Creek is a concrete culvert carrying SR-91 Tpk 134.1 over Danforth Creek 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 good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 52,700 vehicles a day, roughly 20% of them trucks, projected to reach 91,434 by 2042. The structure is 30 ft (9 m) long.

CarriesSR-91 Tpk 134.1
CrossesDanforth Creek
Location0.51 Mi. S of SR-714
RouteState Highway 91
StateFlorida
Coordinates27.15513, -80.30038
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating31 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length30 ft (9 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 traffic52,700 (2023)
Projected traffic91,434 by 2042
Trucks20%
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 SR-91 Tpk 134.1 over Danforth Creek built?

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

What condition is SR-91 Tpk 134.1 over Danforth Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does SR-91 Tpk 134.1 over Danforth Creek carry?

About 52,700 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is SR-91 Tpk 134.1 over Danforth Creek?

The structure is 30 ft (9 m) long with a longest span of 10 ft (3 m).

Who owns SR-91 Tpk 134.1 over Danforth Creek?

It is owned by the State Toll Authority.