US Bridges

N3995 (73 Ave.) over Mill Creek

Fair

Tulsa County, Oklahoma · 900 S 73 E Ave. · Structure no. 101330000000000

Built
1945
80 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
3,520
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3995 (73 Ave.) over Mill Creek is a concrete culvert carrying N3995 (73 Ave.) over Mill Creek in Tulsa County, Oklahoma. It was built in 1945, so it is 80 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 6 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 3,520 vehicles a day, roughly 5% of them trucks, projected to reach 5,632 by 2042. The structure is 21 ft (6.4 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN3995 (73 Ave.)
CrossesMill Creek
Location900 S 73 E Ave.
RouteCity Street N3995
CountyTulsa County
StateOklahoma
Coordinates36.14976, -95.89569
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3.1 m)
Deck width54 ft (16.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,520 (2022)
Projected traffic5,632 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3995 (73 Ave.) over Mill Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is N3995 (73 Ave.) over Mill 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 November 2024.

How much traffic does N3995 (73 Ave.) over Mill Creek carry?

About 3,520 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N3995 (73 Ave.) over Mill Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3.1 m) and a deck 54 ft wide.

Who owns N3995 (73 Ave.) over Mill Creek?

It is owned by the City or Municipal Highway Agency.