US Bridges

Chapman RD over Arnold Brook

Fair

Aroostook County, Maine · 2.0 MI SW of JCT US1 · Structure no. 2421

Built
1928
97 years old, rebuilt 1965
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
970
2016 count
Owner
State
State Highway Agency

About this bridge

Chapman RD over Arnold Brook is a concrete slab carrying Chapman RD over Arnold Brook in Aroostook County, Maine. It was built in 1928 and reconstructed in 1965, so it is 97 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 970 vehicles a day, roughly 5% of them trucks, projected to reach 1,552 by 2036. The structure is 24 ft (7.3 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesChapman RD
CrossesArnold Brook
Location2.0 MI SW of JCT US1
RouteCity Street 0
StateMaine
Coordinates46.65857, -68.04586
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic970 (2016)
Projected traffic1,552 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Chapman RD over Arnold Brook built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1965.

What condition is Chapman RD over Arnold 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 June 2024.

How much traffic does Chapman RD over Arnold Brook carry?

About 970 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Chapman RD over Arnold Brook?

The structure is 24 ft (7.3 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns Chapman RD over Arnold Brook?

It is owned by the State Highway Agency.