US Bridges

Merrill RD over Collyer Brook

Fair

Cumberland County, Maine · 0.4 MI N of JCT Mayall RD · Structure no. 0250

Built
1992
33 years old
Condition
Fair
inspected June 2024
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
419
2016 count
Owner
State
State Highway Agency

About this bridge

Merrill RD over Collyer Brook is a wood or timber slab carrying Merrill RD over Collyer Brook in Cumberland County, Maine. It was built in 1992, so it is 33 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 419 vehicles a day, roughly 5% of them trucks, projected to reach 670 by 2036. The structure is 26 ft (8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMerrill RD
CrossesCollyer Brook
Location0.4 MI N of JCT Mayall RD
RouteCity Street 0
CountyCumberland County
StateMaine
Coordinates43.8971, -70.29496
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; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length26 ft (8 m)
Longest span24 ft (7.4 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic419 (2016)
Projected traffic670 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Merrill RD over Collyer Brook built?

It was built in 1992, making it 33 years old in 2025.

What condition is Merrill RD over Collyer 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 Merrill RD over Collyer Brook carry?

About 419 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Merrill RD over Collyer Brook?

The structure is 26 ft (8 m) long with a longest span of 24 ft (7.4 m) and a deck 24 ft wide.

Who owns Merrill RD over Collyer Brook?

It is owned by the State Highway Agency.