US Bridges

Charles Coleman Bo over Swamp River

Fair

Dutchess County, New York · 0.6 MI NE of Pawling · Structure no. 000000002343470

Built
1928
97 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
1,814
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Charles Coleman Bo over Swamp River is a steel stringer/multi-beam or girder carrying Charles Coleman Bo over Swamp River in Dutchess County, New York. It was built in 1928, so it is 97 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 1,814 vehicles a day, roughly 4% of them trucks, projected to reach 2,540 by 2041. The structure is 26 ft (7.9 m) long and 22 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCharles Coleman Bo
CrossesSwamp River
Location0.6 MI NE of Pawling
CountyDutchess County
StateNew York
Coordinates41.57054, -73.59972
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,814 (2021)
Projected traffic2,540 by 2041
Trucks4%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$784,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Charles Coleman Bo over Swamp River built?

It was built in 1928, making it 97 years old in 2025.

What condition is Charles Coleman Bo over Swamp River 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 June 2023.

How much traffic does Charles Coleman Bo over Swamp River carry?

About 1,814 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Charles Coleman Bo over Swamp River?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 22 ft wide.

Who owns Charles Coleman Bo over Swamp River?

It is owned by the Town or Township Highway Agency.