US Bridges

Mapletown RD over Canajoharie Creek

Good

Montgomery County, New York · 1.2 MI NE of Ames · Structure no. 000000003309800

Built
2006
19 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
89
2020 count
Owner
County
County Highway Agency

About this bridge

Mapletown RD over Canajoharie Creek is a prestressed concrete box beam or girders - multiple carrying Mapletown RD over Canajoharie Creek in Montgomery County, New York. It was built in 2006, so it is 19 years old, younger than the New York average of 53 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 89 vehicles a day, roughly 15% of them trucks, projected to reach 125 by 2040. The structure is 94 ft (28.7 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesMapletown RD
CrossesCanajoharie Creek
Location1.2 MI NE of Ames
RouteCounty Highway 0
Coordinates42.84348, -74.58424
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92 US tons
Inventory rating55 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length94 ft (28.7 m)
Longest span91 ft (27.7 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic89 (2020)
Projected traffic125 by 2040
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mapletown RD over Canajoharie Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Mapletown RD over Canajoharie 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 April 2023.

How much traffic does Mapletown RD over Canajoharie Creek carry?

About 89 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Mapletown RD over Canajoharie Creek?

The structure is 94 ft (28.7 m) long with a longest span of 91 ft (27.7 m) and a deck 33 ft wide.

Who owns Mapletown RD over Canajoharie Creek?

It is owned by the County Highway Agency.