US Bridges

RTE 21 over Karr Valley Creek

Fair

Allegany County, New York · RTE 21 S End Almond · Structure no. 000000001016310

Built
1990
35 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
177 ft
2 main spans
Daily traffic
6,130
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 21 over Karr Valley Creek is a prestressed concrete box beam or girders - multiple carrying RTE 21 over Karr Valley Creek in Allegany County, New York. It was built in 1990, so it is 35 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 6,130 vehicles a day, roughly 8% of them trucks, projected to reach 6,510 by 2041. The structure is 177 ft (53.9 m) long and 41 ft wide. If it were closed, the detour would be 40.4 mi (65 km).

Location

Open in Google Maps
CarriesRTE 21
CrossesKarr Valley Creek
LocationRTE 21 S End Almond
RouteState Highway 21
CountyAllegany County
StateNew York
Coordinates42.31624, -77.74072
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length177 ft (53.9 m)
Longest span87 ft (26.5 m)
Deck width41 ft (12.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,130 (2020)
Projected traffic6,510 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed40.4 mi (65 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$3.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 21 over Karr Valley Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is RTE 21 over Karr Valley 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 June 2023.

How much traffic does RTE 21 over Karr Valley Creek carry?

About 6,130 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is RTE 21 over Karr Valley Creek?

The structure is 177 ft (53.9 m) long with a longest span of 87 ft (26.5 m) and a deck 41 ft wide.

Who owns RTE 21 over Karr Valley Creek?

It is owned by the State Highway Agency.