US Bridges

Main ST over Wapsaconhagan

Fair

Washington County, Maine · .1 MI N JCT 1 · Structure no. 5839

Built
1930
95 years old, rebuilt 1961
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
26 ft
1 main span
Daily traffic
1,936
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Wapsaconhagan is a concrete tee beam carrying Main ST over Wapsaconhagan in Washington County, Maine. It was built in 1930 and reconstructed in 1961, so it is 95 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 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 1,936 vehicles a day, roughly 5% of them trucks, projected to reach 2,904 by 2036. The structure is 26 ft (8 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMain ST
CrossesWapsaconhagan
Location.1 MI N JCT 1
RouteCounty Highway 0
StateMaine
Coordinates45.15141, -67.40186
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length26 ft (8 m)
Longest span23 ft (7 m)
Deck width50 ft (15.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,936 (2016)
Projected traffic2,904 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Main ST over Wapsaconhagan built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1961.

What condition is Main ST over Wapsaconhagan 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 June 2024.

How much traffic does Main ST over Wapsaconhagan carry?

About 1,936 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Wapsaconhagan?

The structure is 26 ft (8 m) long with a longest span of 23 ft (7 m) and a deck 50 ft wide.

Who owns Main ST over Wapsaconhagan?

It is owned by the State Highway Agency.