US Bridges

Mitten Mountain RD over Kaylor Brook

Good

Washington County, Maine · 5 MI NE Tibbetstown Road · Structure no. 1170

Built
2021
4 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
63
2016 count
Owner
County
County Highway Agency

About this bridge

Mitten Mountain RD over Kaylor Brook is a steel stringer/multi-beam or girder carrying Mitten Mountain RD over Kaylor Brook in Washington County, Maine. It was built in 2021, so it is 4 years old, younger than the Maine average of 53.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 63 vehicles a day, roughly 5% of them trucks, projected to reach 101 by 2036. The structure is 37 ft (11.3 m) long and 23 ft wide. If it were closed, the detour would be 100 mi (161 km).

CarriesMitten Mountain RD
CrossesKaylor Brook
Location5 MI NE Tibbetstown Road
RouteCity Street 0
StateMaine
Coordinates44.70779, -67.67511
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.1 US tons
Inventory rating66.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length37 ft (11.3 m)
Longest span35 ft (10.7 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2016)
Projected traffic101 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

OwnerCounty Highway Agency
Maintained byCounty 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 Mitten Mountain RD over Kaylor Brook built?

It was built in 2021, making it 4 years old in 2025.

What condition is Mitten Mountain RD over Kaylor Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Mitten Mountain RD over Kaylor Brook carry?

About 63 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Mitten Mountain RD over Kaylor Brook?

The structure is 37 ft (11.3 m) long with a longest span of 35 ft (10.7 m) and a deck 23 ft wide.

Who owns Mitten Mountain RD over Kaylor Brook?

It is owned by the County Highway Agency.