US Bridges

Union Rd. over Trib Little Swatara Cr.

Good

Lebanon County, Pennsylvania · 1 Mi.N. of Mt.Zion · Structure no. 000000000046808

Built
2011
14 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
825
2023 count
Owner
State
State Highway Agency

About this bridge

Union Rd. over Trib Little Swatara Cr. is a prestressed concrete box beam or girders - multiple carrying Union Rd. over Trib Little Swatara Cr. in Lebanon County, Pennsylvania. It was built in 2011, so it is 14 years old, younger than the Pennsylvania average of 54.8 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 825 vehicles a day, roughly 7% of them trucks, projected to reach 1,166 by 2032. The structure is 60 ft (18.3 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUnion Rd.
CrossesTrib Little Swatara Cr.
Location1 Mi.N. of Mt.Zion
RouteState Highway 0
CountyLebanon County
StatePennsylvania
Coordinates40.40752, -76.39213
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 rating72.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic825 (2023)
Projected traffic1,166 by 2032
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Union Rd. over Trib Little Swatara Cr. built?

It was built in 2011, making it 14 years old in 2025.

What condition is Union Rd. over Trib Little Swatara Cr. 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 October 2023.

How much traffic does Union Rd. over Trib Little Swatara Cr. carry?

About 825 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Union Rd. over Trib Little Swatara Cr.?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 32 ft wide.

Who owns Union Rd. over Trib Little Swatara Cr.?

It is owned by the State Highway Agency.