US Bridges

RD Inv 3201031 over Main Canal

Fair

Androscoggin County, Maine · Immed. Wly of Route 196 · Structure no. 1531

Built
1973
52 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
1 main span
Daily traffic
5,365
2016 count
Owner
State
State Highway Agency

About this bridge

RD Inv 3201031 over Main Canal is a steel stringer/multi-beam or girder carrying RD Inv 3201031 over Main Canal in Androscoggin County, Maine. It was built in 1973, so it is 52 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 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 5,365 vehicles a day, roughly 5% of them trucks, projected to reach 7,511 by 2036. The structure is 106 ft (32.2 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesRD Inv 3201031
CrossesMain Canal
LocationImmed. Wly of Route 196
RouteCity Street 0
CountyAndroscoggin County
StateMaine
Coordinates44.09195, -70.21583
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length106 ft (32.2 m)
Longest span100 ft (30.5 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,365 (2016)
Projected traffic7,511 by 2036
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 RD Inv 3201031 over Main Canal built?

It was built in 1973, making it 52 years old in 2025.

What condition is RD Inv 3201031 over Main Canal 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 September 2024.

How much traffic does RD Inv 3201031 over Main Canal carry?

About 5,365 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is RD Inv 3201031 over Main Canal?

The structure is 106 ft (32.2 m) long with a longest span of 100 ft (30.5 m) and a deck 32 ft wide.

Who owns RD Inv 3201031 over Main Canal?

It is owned by the State Highway Agency.