US Bridges

Knights Trail Road over Thaos Passing

Good

Sarasota County, Florida · 4.3 MI North of Laurel RD · Structure no. 174091

Built
1996
29 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
35 ft
5 main spans
Daily traffic
5,800
2024 count
Owner
County
County Highway Agency

About this bridge

Knights Trail Road over Thaos Passing is a concrete culvert carrying Knights Trail Road over Thaos Passing in Sarasota County, Florida. It was built in 1996, so it is 29 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,800 vehicles a day, roughly 28% of them trucks, projected to reach 10,063 by 2042. The structure is 35 ft (10.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesKnights Trail Road
CrossesThaos Passing
Location4.3 MI North of Laurel RD
RouteCounty Highway 0
StateFlorida
Coordinates27.19413, -82.40009
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length35 ft (10.8 m)
Longest span6 ft (1.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2024)
Projected traffic10,063 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Knights Trail Road over Thaos Passing built?

It was built in 1996, making it 29 years old in 2025.

What condition is Knights Trail Road over Thaos Passing 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 July 2024.

How much traffic does Knights Trail Road over Thaos Passing carry?

About 5,800 vehicles per day (2024 count), of which roughly 28% are trucks.

How long is Knights Trail Road over Thaos Passing?

The structure is 35 ft (10.8 m) long with a longest span of 6 ft (1.9 m).

Who owns Knights Trail Road over Thaos Passing?

It is owned by the County Highway Agency.