US Bridges

N3940 (elwood) over Coal Creek

Fair

Tulsa County, Oklahoma · 0.8 MI S of 101 ST · Structure no. 190190000000000

Built
1975
50 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
102 ft
2 main spans
Daily traffic
1,588
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3940 (elwood) over Coal Creek is a prestressed concrete stringer/multi-beam or girder carrying N3940 (elwood) over Coal Creek in Tulsa County, Oklahoma. It was built in 1975, so it is 50 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 5 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 1,588 vehicles a day, roughly 10% of them trucks, projected to reach 2,541 by 2042. The structure is 102 ft (31.1 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN3940 (elwood)
CrossesCoal Creek
Location0.8 MI S of 101 ST
RouteCity Street N3940
CountyTulsa County
StateOklahoma
Coordinates36.0068, -95.99389
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span67 ft (20.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,588 (2022)
Projected traffic2,541 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal 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$514,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3940 (elwood) over Coal Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is N3940 (elwood) over Coal Creek 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 February 2024.

How much traffic does N3940 (elwood) over Coal Creek carry?

About 1,588 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3940 (elwood) over Coal Creek?

The structure is 102 ft (31.1 m) long with a longest span of 67 ft (20.4 m) and a deck 33 ft wide.

Who owns N3940 (elwood) over Coal Creek?

It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.