US Bridges

T473 N. Eighth ST over Norfolk Southern RR

Poor

Blair County, Pennsylvania · Juniata 8th.ST.BRIDGE · Structure no. 000000000005942

Built
1979
46 years old, rebuilt 2012
Condition
Poor
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
400 ft
5 main spans
Daily traffic
10,200
2024 count
Owner
County
County Highway Agency

About this bridge

T473 N. Eighth ST over Norfolk Southern RR is a prestressed concrete box beam or girders - multiple carrying T473 N. Eighth ST over Norfolk Southern RR in Blair County, Pennsylvania. It was built in 1979 and reconstructed in 2012, so it is 46 years old, younger than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10,200 vehicles a day, roughly 1% of them trucks, projected to reach 12,750 by 2044. The structure is 400 ft (121.9 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT473 N. Eighth ST
CrossesNorfolk Southern RR
LocationJuniata 8th.ST.BRIDGE
RouteCity Street 0
Coordinates40.5374, -78.37587
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating28 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length400 ft (121.9 m)
Longest span85 ft (25.9 m)
Deck width36 ft (11.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2024)
Projected traffic12,750 by 2044
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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$2.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was T473 N. Eighth ST over Norfolk Southern RR built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2012.

What condition is T473 N. Eighth ST over Norfolk Southern RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does T473 N. Eighth ST over Norfolk Southern RR carry?

About 10,200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is T473 N. Eighth ST over Norfolk Southern RR?

The structure is 400 ft (121.9 m) long with a longest span of 85 ft (25.9 m) and a deck 36 ft wide.

Who owns T473 N. Eighth ST over Norfolk Southern RR?

It is owned by the County Highway Agency.