US Bridges

T-351 Potato Valle over N.Br.Mahantango Cr.

Good

Snyder County, Pennsylvania · 1 Mi.Se of Mt.Pleasant Ml · Structure no. 000000000031295

Built
1991
34 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
75
2009 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-351 Potato Valle over N.Br.Mahantango Cr. is a prestressed concrete box beam or girders - multiple carrying T-351 Potato Valle over N.Br.Mahantango Cr. in Snyder County, Pennsylvania. It was built in 1991, so it is 34 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 75 vehicles a day, roughly 5% of them trucks, projected to reach 115 by 2031. The structure is 39 ft (11.9 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesT-351 Potato Valle
CrossesN.Br.Mahantango Cr.
Location1 Mi.Se of Mt.Pleasant Ml
RouteCity Street 0
CountySnyder County
StatePennsylvania
Coordinates40.71709, -77.00134
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span38 ft (11.6 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2009)
Projected traffic115 by 2031
Trucks5%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 T-351 Potato Valle over N.Br.Mahantango Cr. built?

It was built in 1991, making it 34 years old in 2025.

What condition is T-351 Potato Valle over N.Br.Mahantango 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 September 2023.

How much traffic does T-351 Potato Valle over N.Br.Mahantango Cr. carry?

About 75 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is T-351 Potato Valle over N.Br.Mahantango Cr.?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 29 ft wide.

Who owns T-351 Potato Valle over N.Br.Mahantango Cr.?

It is owned by the Town or Township Highway Agency.