US Bridges

Belfast RD over Half Moon Stream

Fair

Waldo County, Maine · 1.5 MI Ely of RTE 220 · Structure no. 2440

Built
1929
96 years old, rebuilt 2001
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
29 ft
1 main span
Daily traffic
3,404
2016 count
Owner
State
State Highway Agency

About this bridge

Belfast RD over Half Moon Stream is a concrete tee beam carrying Belfast RD over Half Moon Stream in Waldo County, Maine. It was built in 1929 and reconstructed in 2001, so it is 96 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 5 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 3,404 vehicles a day, roughly 5% of them trucks, projected to reach 4,766 by 2036. The structure is 29 ft (8.7 m) long and 33 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

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CarriesBelfast RD
CrossesHalf Moon Stream
Location1.5 MI Ely of RTE 220
RouteState Highway 137
CountyWaldo County
StateMaine
Coordinates44.52331, -69.24396
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length29 ft (8.7 m)
Longest span26 ft (7.9 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,404 (2016)
Projected traffic4,766 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 Belfast RD over Half Moon Stream built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2001.

What condition is Belfast RD over Half Moon Stream 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 Belfast RD over Half Moon Stream carry?

About 3,404 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Belfast RD over Half Moon Stream?

The structure is 29 ft (8.7 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.

Who owns Belfast RD over Half Moon Stream?

It is owned by the State Highway Agency.