US Bridges

Dennis Hill RD over Cobbossee Stream

Fair

Kennebec County, Maine · 0.1 MI E of Bog Hill RD · Structure no. 3329

Built
1936
89 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
97 ft
2 main spans
Daily traffic
415
2016 count
Owner
State
State Highway Agency

About this bridge

Dennis Hill RD over Cobbossee Stream is a steel stringer/multi-beam or girder carrying Dennis Hill RD over Cobbossee Stream in Kennebec 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 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 415 vehicles a day, roughly 5% of them trucks, projected to reach 664 by 2036. The structure is 97 ft (29.6 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesDennis Hill RD
CrossesCobbossee Stream
Location0.1 MI E of Bog Hill RD
RouteCity Street 0
CountyKennebec County
StateMaine
Coordinates44.19313, -69.89653
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length97 ft (29.6 m)
Longest span45 ft (13.7 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic415 (2016)
Projected traffic664 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

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 Dennis Hill RD over Cobbossee Stream built?

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

What condition is Dennis Hill RD over Cobbossee 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 May 2024.

How much traffic does Dennis Hill RD over Cobbossee Stream carry?

About 415 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Dennis Hill RD over Cobbossee Stream?

The structure is 97 ft (29.6 m) long with a longest span of 45 ft (13.7 m) and a deck 24 ft wide.

Who owns Dennis Hill RD over Cobbossee Stream?

It is owned by the State Highway Agency.