US Bridges

T-557 over Unt to Little Fishing CR

Good

Columbia County, Pennsylvania · 1.1 MI South of Millville · Structure no. 000000000045563

Built
2008
17 years old
Condition
Good
inspected May 2023
Type
Arch - Deck
Steel
Length
20 ft
1 main span
Daily traffic
100
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-557 over Unt to Little Fishing CR is a steel arch - deck carrying T-557 over Unt to Little Fishing CR in Columbia County, Pennsylvania. It was built in 2008, so it is 17 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 155 by 2045. The structure is 20 ft (6.1 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesT-557
CrossesUnt to Little Fishing CR
Location1.1 MI South of Millville
RouteCity Street 0
Coordinates41.10532, -76.52136
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
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 inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic155 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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-557 over Unt to Little Fishing CR built?

It was built in 2008, making it 17 years old in 2025.

What condition is T-557 over Unt to Little Fishing 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 May 2023.

How much traffic does T-557 over Unt to Little Fishing CR carry?

About 100 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is T-557 over Unt to Little Fishing CR?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns T-557 over Unt to Little Fishing CR?

It is owned by the Town or Township Highway Agency.