US Bridges

Southern Bay RD over Winslow Stream

Poor

Hancock County, Maine · 0.1 MI N JCT RTE 177 · Structure no. 3297

Built
1936
89 years old
Condition
Poor
inspected October 2023
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
2,051
2016 count
Owner
State
State Highway Agency

About this bridge

Southern Bay RD over Winslow Stream is a concrete slab carrying Southern Bay RD over Winslow Stream in Hancock County, Maine. It was built in 1936, so it is 89 years old, older than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 2,051 vehicles a day, roughly 5% of them trucks, projected to reach 2,871 by 2036. The structure is 24 ft (7.2 m) long and 41 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSouthern Bay RD
CrossesWinslow Stream
Location0.1 MI N JCT RTE 177
RouteCounty Highway 175
CountyHancock County
StateMaine
Coordinates44.45263, -68.70266
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating63.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length24 ft (7.2 m)
Longest span20 ft (6.1 m)
Deck width41 ft (12.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,051 (2016)
Projected traffic2,871 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed13 mi (21 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 Southern Bay RD over Winslow Stream built?

It was built in 1936, making it 89 years old in 2025.

What condition is Southern Bay RD over Winslow Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Southern Bay RD over Winslow Stream carry?

About 2,051 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Southern Bay RD over Winslow Stream?

The structure is 24 ft (7.2 m) long with a longest span of 20 ft (6.1 m) and a deck 41 ft wide.

Who owns Southern Bay RD over Winslow Stream?

It is owned by the State Highway Agency.