US Bridges

Dam RD over Magalloway River

Fair

Oxford County, Maine · .4 MI NE of Nh Line · Structure no. 3513

Built
1974
51 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
205 ft
3 main spans
Daily traffic
423
2016 count
Owner
State
State Highway Agency

About this bridge

Dam RD over Magalloway River is a steel continuous stringer/multi-beam or girder carrying Dam RD over Magalloway River in Oxford County, Maine. It was built in 1974, so it is 51 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 423 vehicles a day, roughly 5% of them trucks, projected to reach 677 by 2036. The structure is 205 ft (62.5 m) long and 34 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesDam RD
CrossesMagalloway River
Location.4 MI NE of Nh Line
RouteState Highway 16
StateMaine
Coordinates44.86716, -71.04185
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating42.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length205 ft (62.5 m)
Longest span80 ft (24.4 m)
Deck width34 ft (10.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic423 (2016)
Projected traffic677 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 Dam RD over Magalloway River built?

It was built in 1974, making it 51 years old in 2025.

What condition is Dam RD over Magalloway 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 November 2024.

How much traffic does Dam RD over Magalloway River carry?

About 423 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Dam RD over Magalloway River?

The structure is 205 ft (62.5 m) long with a longest span of 80 ft (24.4 m) and a deck 34 ft wide.

Who owns Dam RD over Magalloway River?

It is owned by the State Highway Agency.