US Bridges

N0640 over Beaver River

Fair

Texas County, Oklahoma · 4.8W 2.9N of Texhoma · Structure no. 192680000000000

Built
1976
49 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
400 ft
10 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N0640 over Beaver River is a concrete stringer/multi-beam or girder carrying N0640 over Beaver River in Texas County, Oklahoma. It was built in 1976, so it is 49 years old, older than the Oklahoma average of 47.8 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 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 400 ft (121.9 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN0640
CrossesBeaver River
Location4.8W 2.9N of Texhoma
RouteCounty Highway N0640
CountyTexas County
StateOklahoma
Coordinates36.54699, -101.87191
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 20
Structure length400 ft (121.9 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N0640 over Beaver River built?

It was built in 1976, making it 49 years old in 2025.

What condition is N0640 over Beaver River 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 October 2023.

How much traffic does N0640 over Beaver River carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N0640 over Beaver River?

The structure is 400 ft (121.9 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns N0640 over Beaver River?

It is owned by the County Highway Agency.