US Bridges

Mansion Street over Fall Kill Creek

Fair

Dutchess County, New York · City of Poughkeepsie · Structure no. 000000002262750

Built
1920
105 years old
Condition
Fair
inspected April 2023
Type
Arch - Deck
Concrete
Length
34 ft
1 main span
Daily traffic
2,219
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mansion Street over Fall Kill Creek is a concrete arch - deck carrying Mansion Street over Fall Kill Creek in Dutchess County, New York. It was built in 1920, so it is 105 years old, older 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 2,219 vehicles a day, roughly 1% of them trucks, projected to reach 2,745 by 2041. The structure is 34 ft (10.4 m) long and 97 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMansion Street
CrossesFall Kill Creek
LocationCity of Poughkeepsie
RouteCity Street 0
Coordinates41.70388, -73.91238
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.4 US tons
Inventory rating16.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span22 ft (6.7 m)
Deck width97 ft (29.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,219 (2021)
Projected traffic2,745 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mansion Street over Fall Kill Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Mansion Street over Fall Kill Creek 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 April 2023.

How much traffic does Mansion Street over Fall Kill Creek carry?

About 2,219 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Mansion Street over Fall Kill Creek?

The structure is 34 ft (10.4 m) long with a longest span of 22 ft (6.7 m) and a deck 97 ft wide.

Who owns Mansion Street over Fall Kill Creek?

It is owned by the City or Municipal Highway Agency.