US Bridges

N4506 over Cypress Creek

Good

McCurtain County, Oklahoma · 1.6N 5.2E of Ringold · Structure no. 311450000000000

Built
2018
7 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
143 ft
2 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

N4506 over Cypress Creek is a steel stringer/multi-beam or girder carrying N4506 over Cypress Creek in McCurtain County, Oklahoma. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 143 ft (43.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN4506
CrossesCypress Creek
Location1.6N 5.2E of Ringold
RouteCounty Highway N4506
Coordinates34.20271, -95.01641
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length143 ft (43.6 m)
Longest span82 ft (25 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N4506 over Cypress Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is N4506 over Cypress Creek 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 2023.

How much traffic does N4506 over Cypress Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4506 over Cypress Creek?

The structure is 143 ft (43.6 m) long with a longest span of 82 ft (25 m) and a deck 28 ft wide.

Who owns N4506 over Cypress Creek?

It is owned by the County Highway Agency.