US Bridges

Dingley RD over Mallon Bk

Good

Sagadahoc County, Maine · 2.1 Mi. S. Rte. 138 · Structure no. 6366

Built
2022
3 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
152
2016 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Dingley RD over Mallon Bk is a concrete culvert carrying Dingley RD over Mallon Bk in Sagadahoc County, Maine. It was built in 2022, so it is 3 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 152 vehicles a day, roughly 5% of them trucks, projected to reach 243 by 2036. The structure is 28 ft (8.5 m) long and 30 ft wide.

CarriesDingley RD
CrossesMallon Bk
Location2.1 Mi. S. Rte. 138
RouteCity Street 0
StateMaine
Coordinates44.07453, -69.88353
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.8 US tons
Inventory rating51.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2016)
Projected traffic243 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Dingley RD over Mallon Bk built?

It was built in 2022, making it 3 years old in 2025.

What condition is Dingley RD over Mallon Bk 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 August 2024.

How much traffic does Dingley RD over Mallon Bk carry?

About 152 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Dingley RD over Mallon Bk?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 30 ft wide.

Who owns Dingley RD over Mallon Bk?

It is owned by the Town or Township Highway Agency.