US Bridges

Atlantic HWY over Frohock Brook

Good

Waldo County, Maine · .2 MI N JCT 173 · Structure no. 2458

Built
2004
21 years old
Condition
Good
inspected March 2024
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
6,734
2016 count
Owner
State
State Highway Agency

About this bridge

Atlantic HWY over Frohock Brook is a prestressed concrete slab carrying Atlantic HWY over Frohock Brook in Waldo County, Maine. It was built in 2004, so it is 21 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,734 vehicles a day, roughly 5% of them trucks, projected to reach 9,428 by 2036. The structure is 45 ft (13.7 m) long and 30 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

Open in Google Maps
CarriesAtlantic HWY
CrossesFrohock Brook
Location.2 MI N JCT 173
RouteState Highway 1
CountyWaldo County
StateMaine
Coordinates44.28331, -69.00853
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadGreater than HL 93
Structure length45 ft (13.7 m)
Longest span42 ft (12.8 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,734 (2016)
Projected traffic9,428 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 km)
TollOn a free road
National Highway SystemYes

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 Atlantic HWY over Frohock Brook built?

It was built in 2004, making it 21 years old in 2025.

What condition is Atlantic HWY over Frohock 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 March 2024.

How much traffic does Atlantic HWY over Frohock Brook carry?

About 6,734 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Atlantic HWY over Frohock Brook?

The structure is 45 ft (13.7 m) long with a longest span of 42 ft (12.8 m) and a deck 30 ft wide.

Who owns Atlantic HWY over Frohock Brook?

It is owned by the State Highway Agency.