US Bridges

N4450 over Elm Creek

Good

Mayes County, Oklahoma · 1.9W & 2N of LA · Structure no. 329470000000000

Built
2021
4 years old
Condition
Good
inspected March 2023
Type
Culvert
Steel
Length
36 ft
1 main span
Daily traffic
25
2022 count
Owner
County
County Highway Agency

About this bridge

N4450 over Elm Creek is a steel culvert carrying N4450 over Elm Creek in Mayes County, Oklahoma. It was built in 2021, so it is 4 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 32 by 2042. The structure is 36 ft (10.9 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN4450
CrossesElm Creek
Location1.9W & 2N of LA
RouteCounty Highway N4450
Coordinates36.49319, -95.07762
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionMarch 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span35 ft (10.7 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2022)
Projected traffic32 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N4450 over Elm Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is N4450 over Elm 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 March 2023.

How much traffic does N4450 over Elm Creek carry?

About 25 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4450 over Elm Creek?

The structure is 36 ft (10.9 m) long with a longest span of 35 ft (10.7 m) and a deck 25 ft wide.

Who owns N4450 over Elm Creek?

It is owned by the County Highway Agency.