US Bridges

US 11 Sb; N.Main S over Falling Spring Branch

Good

Franklin County, Pennsylvania · Chambersburg · Structure no. 000000000068695

Built
2021
4 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
7,758
2024 count
Owner
State
State Highway Agency

About this bridge

US 11 Sb; N.Main S over Falling Spring Branch is a prestressed concrete box beam or girders - multiple carrying US 11 Sb; N.Main S over Falling Spring Branch in Franklin County, Pennsylvania. It was built in 2021, so it is 4 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 7,758 vehicles a day, roughly 6% of them trucks, projected to reach 9,546 by 2041. The structure is 26 ft (7.9 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 11 Sb; N.Main S
CrossesFalling Spring Branch
LocationChambersburg
RouteU.S. Route 11
Coordinates39.93983, -77.66076
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width58 ft (17.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,758 (2024)
Projected traffic9,546 by 2041
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 11 Sb; N.Main S over Falling Spring Branch built?

It was built in 2021, making it 4 years old in 2025.

What condition is US 11 Sb; N.Main S over Falling Spring Branch 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 March 2024.

How much traffic does US 11 Sb; N.Main S over Falling Spring Branch carry?

About 7,758 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is US 11 Sb; N.Main S over Falling Spring Branch?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 58 ft wide.

Who owns US 11 Sb; N.Main S over Falling Spring Branch?

It is owned by the State Highway Agency.