US Bridges

US 1 over Dennys River

Fair

Washington County, Maine · 1MI So #86 · Structure no. 5626

Built
1955
70 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
197 ft
3 main spans
Daily traffic
1,694
2016 count
Owner
State
State Highway Agency

About this bridge

US 1 over Dennys River is a steel stringer/multi-beam or girder carrying US 1 over Dennys River in Washington County, Maine. It was built in 1955, so it is 70 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 1,694 vehicles a day, roughly 5% of them trucks, projected to reach 2,541 by 2036. The structure is 197 ft (60 m) long and 33 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesUS 1
CrossesDennys River
Location1MI So #86
RouteState Highway 1
CountyWashington County
StateMaine
Coordinates44.90631, -67.22311
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating60.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length197 ft (60 m)
Longest span71 ft (21.6 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,694 (2016)
Projected traffic2,541 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US 1 over Dennys River built?

It was built in 1955, making it 70 years old in 2025.

What condition is US 1 over Dennys River 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 September 2024.

How much traffic does US 1 over Dennys River carry?

About 1,694 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is US 1 over Dennys River?

The structure is 197 ft (60 m) long with a longest span of 71 ft (21.6 m) and a deck 33 ft wide.

Who owns US 1 over Dennys River?

It is owned by the State Highway Agency.