US Bridges

Union ST over Interstate 95 NB & SB

Good

Penobscot County, Maine · Interchange #47 · Structure no. 5797

Built
2016
9 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Other
Length
192 ft
2 main spans
Daily traffic
16,488
2016 count
Owner
State
State Highway Agency

About this bridge

Union ST over Interstate 95 NB & SB is a other stringer/multi-beam or girder carrying Union ST over Interstate 95 NB & SB in Penobscot County, Maine. It was built in 2016, so it is 9 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 16,488 vehicles a day, roughly 5% of them trucks, projected to reach 23,083 by 2036. The structure is 192 ft (58.5 m) long and 74 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesUnion ST
CrossesInterstate 95 NB & SB
LocationInterchange #47
RouteState Highway 222
CountyPenobscot County
StateMaine
Coordinates44.80881, -68.79336
Functional classUrban Other Principal Arterial

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.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialOther
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length192 ft (58.5 m)
Longest span91 ft (27.6 m)
Deck width74 ft (22.6 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,488 (2016)
Projected traffic23,083 by 2036
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Union ST over Interstate 95 NB & SB built?

It was built in 2016, making it 9 years old in 2025.

What condition is Union ST over Interstate 95 NB & SB 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 December 2024.

How much traffic does Union ST over Interstate 95 NB & SB carry?

About 16,488 vehicles per day (2016 count), of which roughly 5% are trucks.

How long is Union ST over Interstate 95 NB & SB?

The structure is 192 ft (58.5 m) long with a longest span of 91 ft (27.6 m) and a deck 74 ft wide.

Who owns Union ST over Interstate 95 NB & SB?

It is owned by the State Highway Agency.