US Bridges

Tyrell Road over South Brook

Fair

Dutchess County, New York · 2.5 Miles SW of Millbrook · Structure no. 000000003344100

Built
1992
33 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
118
2020 count
Owner
County
County Highway Agency

About this bridge

Tyrell Road over South Brook is a concrete culvert carrying Tyrell Road over South Brook in Dutchess County, New York. It was built in 1992, so it is 33 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 118 vehicles a day, roughly 5% of them trucks, projected to reach 165 by 2040. The structure is 32 ft (9.8 m) long and 31 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesTyrell Road
CrossesSouth Brook
Location2.5 Miles SW of Millbrook
CountyDutchess County
StateNew York
Coordinates41.77611, -73.74478
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length32 ft (9.8 m)
Longest span15 ft (4.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic118 (2020)
Projected traffic165 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$792,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tyrell Road over South Brook built?

It was built in 1992, making it 33 years old in 2025.

What condition is Tyrell Road over South Brook 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 May 2023.

How much traffic does Tyrell Road over South Brook carry?

About 118 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Tyrell Road over South Brook?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.5 m) and a deck 31 ft wide.

Who owns Tyrell Road over South Brook?

It is owned by the County Highway Agency.