US Bridges

New Dam RD over Mousam River

Fair

York County, Maine · 2.6 MI E RTE 4 · Structure no. 1262

Built
1980
45 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
75 ft
1 main span
Daily traffic
2,100
2016 count
Owner
State
State Highway Agency

About this bridge

New Dam RD over Mousam River is a steel stringer/multi-beam or girder carrying New Dam RD over Mousam River in York County, Maine. It was built in 1980, so it is 45 years old, younger than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 2,100 vehicles a day, roughly 5% of them trucks, projected to reach 2,940 by 2036. The structure is 75 ft (23 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNew Dam RD
CrossesMousam River
Location2.6 MI E RTE 4
RouteCity Street 0
CountyYork County
StateMaine
Coordinates43.42699, -70.68583
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating63.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length75 ft (23 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2016)
Projected traffic2,940 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was New Dam RD over Mousam River built?

It was built in 1980, making it 45 years old in 2025.

What condition is New Dam RD over Mousam 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 December 2023.

How much traffic does New Dam RD over Mousam River carry?

About 2,100 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is New Dam RD over Mousam River?

The structure is 75 ft (23 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns New Dam RD over Mousam River?

It is owned by the State Highway Agency.