US Bridges

N4620 (broadway) over Elm Creek

Good

Delaware County, Oklahoma · Broadway .2 Mi.N of 18th · Structure no. 244660000000000

Built
1995
30 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
2,000
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N4620 (broadway) over Elm Creek is a concrete culvert carrying N4620 (broadway) over Elm Creek in Delaware County, Oklahoma. It was built in 1995, so it is 30 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 2,000 vehicles a day, roughly 5% of them trucks, projected to reach 3,200 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN4620 (broadway)
CrossesElm Creek
LocationBroadway .2 Mi.N of 18th
RouteCity Street N4620
Coordinates36.58061, -94.77186
Functional classUrban 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating73.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2022)
Projected traffic3,200 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4620 (broadway) over Elm Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is N4620 (broadway) 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 February 2024.

How much traffic does N4620 (broadway) over Elm Creek carry?

About 2,000 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N4620 (broadway) over Elm Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns N4620 (broadway) over Elm Creek?

It is owned by the City or Municipal Highway Agency.