US Bridges

Main ST over Jackson Brook

Fair

Somerset County, Maine · 1.2 MI S of JCT RTE 16 · Structure no. 2665

Built
1970
55 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
4,741
2016 count
Owner
State
State Highway Agency

About this bridge

Main ST over Jackson Brook is a concrete culvert carrying Main ST over Jackson Brook in Somerset County, Maine. It was built in 1970, so it is 55 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 4,741 vehicles a day, roughly 5% of them trucks, projected to reach 6,637 by 2036. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesMain ST
CrossesJackson Brook
Location1.2 MI S of JCT RTE 16
RouteState Highway 201
CountySomerset County
StateMaine
Coordinates45.04136, -69.86524
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.7 m)
Longest span22 ft (6.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,741 (2016)
Projected traffic6,637 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemYes

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 Jackson Brook built?

It was built in 1970, making it 55 years old in 2025.

What condition is Main ST over Jackson Brook 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 2023.

How much traffic does Main ST over Jackson Brook carry?

About 4,741 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Main ST over Jackson Brook?

The structure is 25 ft (7.7 m) long with a longest span of 22 ft (6.7 m).

Who owns Main ST over Jackson Brook?

It is owned by the State Highway Agency.