US Bridges

Grondin Road over Ragged Brook

Fair

Penobscot County, Maine · 1.2 Miles West of Interse · Structure no. 1709036P0000000

Built
2000
25 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
20
2024 count
Owner
Federal
National Park Service

About this bridge

Grondin Road over Ragged Brook is a steel stringer/multi-beam or girder carrying Grondin Road over Ragged Brook in Penobscot County, Maine. It was built in 2000, so it is 25 years old, younger 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 20 vehicles a day, roughly 1% of them trucks, projected to reach 30 by 2044. The structure is 34 ft (10.4 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesGrondin Road
CrossesRagged Brook
Location1.2 Miles West of Interse
RouteFederal Lands Road 0
CountyPenobscot County
StateMaine
Coordinates46.05429, -68.59068
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating33 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width13 ft (4 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic30 by 2044
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
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 Grondin Road over Ragged Brook built?

It was built in 2000, making it 25 years old in 2025.

What condition is Grondin Road over Ragged Brook 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 Grondin Road over Ragged Brook carry?

About 20 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Grondin Road over Ragged Brook?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 13 ft wide.

Who owns Grondin Road over Ragged Brook?

It is owned by the National Park Service.