US Bridges

S.H. 20 over Quapaw Creek

Good

Osage County, Oklahoma · 3.8 Mi.W.Tulsa Cl · Structure no. 131100000000000

Built
1953
72 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
262 ft
3 main spans
Daily traffic
4,200
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 20 over Quapaw Creek is a steel continuous stringer/multi-beam or girder carrying S.H. 20 over Quapaw Creek in Osage County, Oklahoma. It was built in 1953, so it is 72 years old, older 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 4,200 vehicles a day, roughly 15% of them trucks, projected to reach 6,720 by 2042. The structure is 262 ft (79.9 m) long and 33 ft wide. If it were closed, the detour would be 42.3 mi (68 km).

Location

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CarriesS.H. 20
CrossesQuapaw Creek
Location3.8 Mi.W.Tulsa Cl
RouteState Highway 20
CountyOsage County
StateOklahoma
Coordinates36.36769, -96.07001
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.3 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length262 ft (79.9 m)
Longest span100 ft (30.5 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2022)
Projected traffic6,720 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.3 mi (68 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$2.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 20 over Quapaw Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is S.H. 20 over Quapaw 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 August 2023.

How much traffic does S.H. 20 over Quapaw Creek carry?

About 4,200 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 20 over Quapaw Creek?

The structure is 262 ft (79.9 m) long with a longest span of 100 ft (30.5 m) and a deck 33 ft wide.

Who owns S.H. 20 over Quapaw Creek?

It is owned by the State Highway Agency.