US Bridges

Route 1N over Maine Central RR

Fair

Sagadahoc County, Maine · .2 MI E Townline · Structure no. 6144

Built
1966
59 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
174 ft
3 main spans
Daily traffic
15,410
2016 count
Owner
State
State Highway Agency

About this bridge

Route 1N over Maine Central RR is a steel continuous stringer/multi-beam or girder carrying Route 1N over Maine Central RR in Sagadahoc County, Maine. It was built in 1966, so it is 59 years old, older 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 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 15,410 vehicles a day, roughly 5% of them trucks, projected to reach 21,574 by 2036. The structure is 174 ft (53.1 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoute 1N
CrossesMaine Central RR
Location.2 MI E Townline
RouteState Highway 1
CountySagadahoc County
StateMaine
Coordinates43.91612, -69.85784
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length174 ft (53.1 m)
Longest span60 ft (18.3 m)
Deck width50 ft (15.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,410 (2016)
Projected traffic21,574 by 2036
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 1N over Maine Central RR built?

It was built in 1966, making it 59 years old in 2025.

What condition is Route 1N over Maine Central RR 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 October 2024.

How much traffic does Route 1N over Maine Central RR carry?

About 15,410 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Route 1N over Maine Central RR?

The structure is 174 ft (53.1 m) long with a longest span of 60 ft (18.3 m) and a deck 50 ft wide.

Who owns Route 1N over Maine Central RR?

It is owned by the State Highway Agency.