US Bridges

T-633 Turbot Twp. over Over Muddy Run

Fair

Northumberland County, Pennsylvania · 1.5 MI N of Milton Boro · Structure no. 000000000029373

Built
1942
83 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
33 ft
1 main span
Daily traffic
650
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T-633 Turbot Twp. over Over Muddy Run is a concrete tee beam carrying T-633 Turbot Twp. over Over Muddy Run in Northumberland County, Pennsylvania. It was built in 1942, so it is 83 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 650 vehicles a day, projected to reach 1,005 by 2041. The structure is 33 ft (10.1 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesT-633 Turbot Twp.
CrossesOver Muddy Run
Location1.5 MI N of Milton Boro
RouteCity Street 0T633
CountyNorthumberland County
StatePennsylvania
Coordinates41.04071, -76.84281
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span32 ft (9.8 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic650 (2019)
Projected traffic1,005 by 2041
Trucks0%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$86,000
NavigationNo navigation control on waterway

Frequently asked questions

When was T-633 Turbot Twp. over Over Muddy Run built?

It was built in 1942, making it 83 years old in 2025.

What condition is T-633 Turbot Twp. over Over Muddy Run 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 2023.

How much traffic does T-633 Turbot Twp. over Over Muddy Run carry?

About 650 vehicles per day (2019 count).

How long is T-633 Turbot Twp. over Over Muddy Run?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m) and a deck 27 ft wide.

Who owns T-633 Turbot Twp. over Over Muddy Run?

It is owned by the Town or Township Highway Agency.