US Bridges

US 422 Bus(lr 146) over Mineral Springs Cr. Sts.

Fair

Berks County, Pennsylvania · Lindbergh Viaduct · Structure no. 000000000005059

Built
1927
98 years old, rebuilt 2003
Condition
Fair
inspected April 2024
Type
Arch - Deck
Concrete
Length
563 ft
7 main spans
Daily traffic
9,576
2024 count
Owner
State
State Highway Agency

About this bridge

US 422 Bus(lr 146) over Mineral Springs Cr. Sts. is a concrete arch - deck carrying US 422 Bus(lr 146) over Mineral Springs Cr. Sts. in Berks County, Pennsylvania. It was built in 1927 and reconstructed in 2003, so it is 98 years old, older than the Pennsylvania average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,576 vehicles a day, roughly 2% of them trucks, projected to reach 13,859 by 2032. The structure is 563 ft (171.6 m) long and 70 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesUS 422 Bus(lr 146)
CrossesMineral Springs Cr. Sts.
LocationLindbergh Viaduct
RouteU.S. Route 422B
CountyBerks County
StatePennsylvania
Coordinates40.33135, -75.89897
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length563 ft (171.6 m)
Longest span83 ft (25.3 m)
Deck width70 ft (21.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,576 (2024)
Projected traffic13,859 by 2032
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$11.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US 422 Bus(lr 146) over Mineral Springs Cr. Sts. built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 2003.

What condition is US 422 Bus(lr 146) over Mineral Springs Cr. Sts. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.

How much traffic does US 422 Bus(lr 146) over Mineral Springs Cr. Sts. carry?

About 9,576 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is US 422 Bus(lr 146) over Mineral Springs Cr. Sts.?

The structure is 563 ft (171.6 m) long with a longest span of 83 ft (25.3 m) and a deck 70 ft wide.

Who owns US 422 Bus(lr 146) over Mineral Springs Cr. Sts.?

It is owned by the State Highway Agency.