US Bridges

Cottage ST over Bird Brook

Fair

Oxford County, Maine · 0.4 MI Nly of Route 117 · Structure no. 0745

Built
1977
48 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
60 ft
2 main spans
Daily traffic
774
2016 count
Owner
State
State Highway Agency

About this bridge

Cottage ST over Bird Brook is a concrete continuous slab carrying Cottage ST over Bird Brook in Oxford County, Maine. It was built in 1977, so it is 48 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 774 vehicles a day, roughly 5% of them trucks, projected to reach 1,238 by 2036. The structure is 60 ft (18.2 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCottage ST
CrossesBird Brook
Location0.4 MI Nly of Route 117
RouteCity Street 0
StateMaine
Coordinates44.21839, -70.53829
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length60 ft (18.2 m)
Longest span23 ft (7 m)
Deck width35 ft (10.6 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic774 (2016)
Projected traffic1,238 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Cottage ST over Bird Brook built?

It was built in 1977, making it 48 years old in 2025.

What condition is Cottage ST over Bird 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 August 2024.

How much traffic does Cottage ST over Bird Brook carry?

About 774 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Cottage ST over Bird Brook?

The structure is 60 ft (18.2 m) long with a longest span of 23 ft (7 m) and a deck 35 ft wide.

Who owns Cottage ST over Bird Brook?

It is owned by the State Highway Agency.