US Bridges

N4020 (garnett) over Brookhollow Creek

Fair

Tulsa County, Oklahoma · 3000 S Garnett · Structure no. 261060000000000

Built
2000
25 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
52 ft
4 main spans
Daily traffic
17,744
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N4020 (garnett) over Brookhollow Creek is a concrete culvert carrying N4020 (garnett) over Brookhollow Creek in Tulsa County, Oklahoma. It was built in 2000, so it is 25 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 17,744 vehicles a day, roughly 5% of them trucks, projected to reach 28,390 by 2042. The structure is 52 ft (16 m) long and 100 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesN4020 (garnett)
CrossesBrookhollow Creek
Location3000 S Garnett
RouteCity Street N4020
CountyTulsa County
StateOklahoma
Coordinates36.12054, -95.85131
Functional classUrban Collector

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable 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 spans4
Design loadHS 20
Structure length52 ft (16 m)
Longest span12 ft (3.7 m)
Deck width100 ft (30.5 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,744 (2022)
Projected traffic28,390 by 2042
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N4020 (garnett) over Brookhollow Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is N4020 (garnett) over Brookhollow 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 March 2023.

How much traffic does N4020 (garnett) over Brookhollow Creek carry?

About 17,744 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N4020 (garnett) over Brookhollow Creek?

The structure is 52 ft (16 m) long with a longest span of 12 ft (3.7 m) and a deck 100 ft wide.

Who owns N4020 (garnett) over Brookhollow Creek?

It is owned by the City or Municipal Highway Agency.