US Bridges

S.H. 18B over Quapaw Creek

Good

Lincoln County, Oklahoma · 3.4 MI E JCT SH 18 · Structure no. 132170000000000

Built
1954
71 years old, rebuilt 2017
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
141 ft
3 main spans
Daily traffic
460
2022 count
Owner
State
State Highway Agency

About this bridge

S.H. 18B over Quapaw Creek is a steel stringer/multi-beam or girder carrying S.H. 18B over Quapaw Creek in Lincoln County, Oklahoma. It was built in 1954 and reconstructed in 2017, so it is 71 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 460 vehicles a day, roughly 15% of them trucks, projected to reach 736 by 2042. The structure is 141 ft (43 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesS.H. 18B
CrossesQuapaw Creek
Location3.4 MI E JCT SH 18
RouteState Highway 18B
CountyLincoln County
StateOklahoma
Coordinates35.59378, -96.82626
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than 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 rating48 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length141 ft (43 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2022)
Projected traffic736 by 2042
Trucks15%
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

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$1.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was S.H. 18B over Quapaw Creek built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2017.

What condition is S.H. 18B 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 July 2024.

How much traffic does S.H. 18B over Quapaw Creek carry?

About 460 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is S.H. 18B over Quapaw Creek?

The structure is 141 ft (43 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns S.H. 18B over Quapaw Creek?

It is owned by the State Highway Agency.