US Bridges

N1990 over B.N. & S.F. R.R. under

Good

Woodward County, Oklahoma · 3E .2N of W.W. Airfield · Structure no. 280520000000000

Built
2005
20 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
276 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N1990 over B.N. & S.F. R.R. under is a steel continuous stringer/multi-beam or girder carrying N1990 over B.N. & S.F. R.R. under in Woodward County, Oklahoma. It was built in 2005, so it is 20 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 276 ft (84.1 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN1990
CrossesB.N. & S.F. R.R. under
Location3E .2N of W.W. Airfield
RouteCounty Highway N1990
CountyWoodward County
StateOklahoma
Coordinates36.43648, -99.46162
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length276 ft (84.1 m)
Longest span118 ft (36 m)
Deck width33 ft (10.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
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$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N1990 over B.N. & S.F. R.R. under built?

It was built in 2005, making it 20 years old in 2025.

What condition is N1990 over B.N. & S.F. R.R. under in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does N1990 over B.N. & S.F. R.R. under carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N1990 over B.N. & S.F. R.R. under?

The structure is 276 ft (84.1 m) long with a longest span of 118 ft (36 m) and a deck 33 ft wide.

Who owns N1990 over B.N. & S.F. R.R. under?

It is owned by the County Highway Agency.