US Bridges

On Tsr 817 over Laurel Creek

Good

Mifflin County, Pennsylvania · Milroy · Structure no. 000000000069833

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
74 ft
2 main spans
Daily traffic
1,244
2024 count
Owner
State
State Highway Agency

About this bridge

On Tsr 817 over Laurel Creek is a prestressed concrete continuous box beam or girders - multiple carrying On Tsr 817 over Laurel Creek in Mifflin County, Pennsylvania. It was built in 2024, so it is 1 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 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 1,244 vehicles a day, roughly 4% of them trucks, projected to reach 1,754 by 2044. The structure is 74 ft (22.6 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesOn Tsr 817
CrossesLaurel Creek
LocationMilroy
RouteState Highway 0
Coordinates40.71328, -77.59258
Functional classUrban Collector

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 inspectionNovember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating37.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length74 ft (22.6 m)
Longest span36 ft (11 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,244 (2024)
Projected traffic1,754 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was On Tsr 817 over Laurel Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is On Tsr 817 over Laurel Creek 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 November 2024.

How much traffic does On Tsr 817 over Laurel Creek carry?

About 1,244 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is On Tsr 817 over Laurel Creek?

The structure is 74 ft (22.6 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns On Tsr 817 over Laurel Creek?

It is owned by the State Highway Agency.