US Bridges

RTE 248 over Unknown Creek

Fair

Allegany County, New York · 1.1 MI NE of Whitesville · Structure no. 000000001068400

Built
1972
53 years old
Condition
Fair
inspected July 2023
Type
Culvert
Steel
Length
31 ft
2 main spans
Daily traffic
1,319
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 248 over Unknown Creek is a steel culvert carrying RTE 248 over Unknown Creek in Allegany County, New York. It was built in 1972, so it is 53 years old, younger than the New York average of 53 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 1,319 vehicles a day, roughly 14% of them trucks, projected to reach 1,375 by 2041. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesRTE 248
CrossesUnknown Creek
Location1.1 MI NE of Whitesville
RouteState Highway 248
CountyAllegany County
StateNew York
Coordinates42.04259, -77.78654
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,319 (2019)
Projected traffic1,375 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$392,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 248 over Unknown Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is RTE 248 over Unknown Creek 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 July 2023.

How much traffic does RTE 248 over Unknown Creek carry?

About 1,319 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is RTE 248 over Unknown Creek?

The structure is 31 ft (9.4 m) long with a longest span of 11 ft (3.3 m).

Who owns RTE 248 over Unknown Creek?

It is owned by the State Highway Agency.