US Bridges

Main ST over Great Pond Outlet

Fair

Kennebec County, Maine · 5.1 MI N JCT of RTE 135 · Structure no. 2063

Built
1996
29 years old
Condition
Fair
inspected October 2024
Type
Slab
Prestressed Concrete
Length
145 ft
3 main spans
Daily traffic
3,504
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Great Pond Outlet is a prestressed concrete slab carrying Main ST over Great Pond Outlet in Kennebec County, Maine. It was built in 1996, so it is 29 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 3,504 vehicles a day, roughly 5% of them trucks, projected to reach 4,906 by 2036. The structure is 145 ft (44.1 m) long and 36 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesMain ST
CrossesGreat Pond Outlet
Location5.1 MI N JCT of RTE 135
RouteState Highway 27
StateMaine
Coordinates44.53014, -69.88805
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length145 ft (44.1 m)
Longest span44 ft (13.4 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,504 (2016)
Projected traffic4,906 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.3 mi (31 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 Main ST over Great Pond Outlet built?

It was built in 1996, making it 29 years old in 2025.

What condition is Main ST over Great Pond Outlet 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 Main ST over Great Pond Outlet carry?

About 3,504 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Great Pond Outlet?

The structure is 145 ft (44.1 m) long with a longest span of 44 ft (13.4 m) and a deck 36 ft wide.

Who owns Main ST over Great Pond Outlet?

It is owned by the State Highway Agency.