US Bridges

N0870 over Beaver River

Fair

Texas County, Oklahoma · 1.3E 3N of Guymon · Structure no. 160210000000000

Built
1964
61 years old, rebuilt 2016
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
125 ft
5 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N0870 over Beaver River is a concrete slab carrying N0870 over Beaver River in Texas County, Oklahoma. It was built in 1964 and reconstructed in 2016, so it is 61 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 6 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 125 ft (38.1 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesN0870
CrossesBeaver River
Location1.3E 3N of Guymon
RouteCounty Highway N0870
CountyTexas County
StateOklahoma
Coordinates36.72338, -101.4566
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating0 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span25 ft (7.6 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 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 closed6.2 mi (10 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$572,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N0870 over Beaver River built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2016.

What condition is N0870 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 N0870 over Beaver River carry?

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

How long is N0870 over Beaver River?

The structure is 125 ft (38.1 m) long with a longest span of 25 ft (7.6 m) and a deck 32 ft wide.

Who owns N0870 over Beaver River?

It is owned by the County Highway Agency.