US Bridges

T-390- Union St. over Pa 283; SR 0300

Fair

Dauphin County, Pennsylvania · 2 Mi.N. Middletown · Structure no. 000000000014350

Built
1971
54 years old, rebuilt 2016
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
172 ft
2 main spans
Daily traffic
8,385
2023 count
Owner
State
State Highway Agency

About this bridge

T-390- Union St. over Pa 283; SR 0300 is a prestressed concrete box beam or girders - multiple carrying T-390- Union St. over Pa 283; SR 0300 in Dauphin County, Pennsylvania. It was built in 1971 and reconstructed in 2016, so it is 54 years old, younger than the Pennsylvania average of 54.8 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 8,385 vehicles a day, roughly 12% of them trucks, projected to reach 10,062 by 2045. The structure is 172 ft (52.4 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT-390- Union St.
CrossesPa 283; SR 0300
Location2 Mi.N. Middletown
RouteState Highway 0
CountyDauphin County
StatePennsylvania
Coordinates40.22704, -76.73752
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating29 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span85 ft (25.9 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,385 (2023)
Projected traffic10,062 by 2045
Trucks12%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$648,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was T-390- Union St. over Pa 283; SR 0300 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2016.

What condition is T-390- Union St. over Pa 283; SR 0300 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 September 2024.

How much traffic does T-390- Union St. over Pa 283; SR 0300 carry?

About 8,385 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is T-390- Union St. over Pa 283; SR 0300?

The structure is 172 ft (52.4 m) long with a longest span of 85 ft (25.9 m) and a deck 48 ft wide.

Who owns T-390- Union St. over Pa 283; SR 0300?

It is owned by the State Highway Agency.