US Bridges

T-456 Etter Road over E Br Conococheague CR

Good

Franklin County, Pennsylvania · 0.3 MI N of 3012 · Structure no. 000000000017668

Built
1904
121 years old, rebuilt 2005
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
1 main span
Daily traffic
100
2009 count
Owner
County
County Highway Agency

About this bridge

T-456 Etter Road over E Br Conococheague CR is a steel stringer/multi-beam or girder carrying T-456 Etter Road over E Br Conococheague CR in Franklin County, Pennsylvania. It was built in 1904 and reconstructed in 2005, so it is 121 years old, older 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 100 vehicles a day, projected to reach 140 by 2029. The structure is 83 ft (25.3 m) long and 15 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT-456 Etter Road
CrossesE Br Conococheague CR
Location0.3 MI N of 3012
RouteCity Street 0
Coordinates39.88309, -77.69918
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating72 US tons
Inventory rating43 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span78 ft (23.8 m)
Deck width15 ft (4.5 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2009)
Projected traffic140 by 2029
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$96,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-456 Etter Road over E Br Conococheague CR built?

It was built in 1904, making it 121 years old in 2025. It was reconstructed in 2005.

What condition is T-456 Etter Road over E Br Conococheague 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-456 Etter Road over E Br Conococheague CR carry?

About 100 vehicles per day (2009 count).

How long is T-456 Etter Road over E Br Conococheague CR?

The structure is 83 ft (25.3 m) long with a longest span of 78 ft (23.8 m) and a deck 15 ft wide.

Who owns T-456 Etter Road over E Br Conococheague CR?

It is owned by the County Highway Agency.