US Bridges

N4030 (129th E. Av over Blackjack Creek

Fair

Tulsa County, Oklahoma · 129E.AVE.;.4M S. 146st. N · Structure no. 246720000000000

Built
1996
29 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
53 ft
3 main spans
Daily traffic
2,988
2024 count
Owner
County
County Highway Agency

About this bridge

N4030 (129th E. Av over Blackjack Creek is a concrete culvert carrying N4030 (129th E. Av over Blackjack Creek in Tulsa County, Oklahoma. It was built in 1996, so it is 29 years old, younger 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 2,988 vehicles a day, roughly 10% of them trucks, projected to reach 4,781 by 2044. The structure is 53 ft (16.2 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN4030 (129th E. Av
CrossesBlackjack Creek
Location129E.AVE.;.4M S. 146st. N
RouteCounty Highway N4030
CountyTulsa County
StateOklahoma
Coordinates36.35804, -95.83015
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 alignment6: Equal to present minimum criteria
Operating rating47 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,988 (2024)
Projected traffic4,781 by 2044
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4030 (129th E. Av over Blackjack Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is N4030 (129th E. Av over Blackjack 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 August 2023.

How much traffic does N4030 (129th E. Av over Blackjack Creek carry?

About 2,988 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is N4030 (129th E. Av over Blackjack Creek?

The structure is 53 ft (16.2 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns N4030 (129th E. Av over Blackjack Creek?

It is owned by the County Highway Agency.