US Bridges

Dority Farm RD over Tannery Brook

Good

Hancock County, Maine · .6 MI S Rt 181 · Structure no. 0455

Built
2017
8 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
64
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Dority Farm RD over Tannery Brook is a prestressed concrete slab carrying Dority Farm RD over Tannery Brook in Hancock County, Maine. It was built in 2017, so it is 8 years old, younger than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 64 vehicles a day, roughly 5% of them trucks, projected to reach 102 by 2036. The structure is 37 ft (11.4 m) long and 18 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesDority Farm RD
CrossesTannery Brook
Location.6 MI S Rt 181
RouteCity Street 0
StateMaine
Coordinates44.71002, -68.42197
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadGreater than HL 93
Structure length37 ft (11.4 m)
Longest span36 ft (11 m)
Deck width18 ft (5.6 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic64 (2016)
Projected traffic102 by 2036
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Dority Farm RD over Tannery Brook built?

It was built in 2017, making it 8 years old in 2025.

What condition is Dority Farm RD over Tannery Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Dority Farm RD over Tannery Brook carry?

About 64 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Dority Farm RD over Tannery Brook?

The structure is 37 ft (11.4 m) long with a longest span of 36 ft (11 m) and a deck 18 ft wide.

Who owns Dority Farm RD over Tannery Brook?

It is owned by the Town or Township Highway Agency.