US Bridges

N4690 (2166C) over Cave Springs Trib.

Fair

Delaware County, Oklahoma · 6.5SE of Grove · Structure no. 028850000000000

Built
1930
95 years old, rebuilt 2010
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4690 (2166C) over Cave Springs Trib. is a steel stringer/multi-beam or girder carrying N4690 (2166C) over Cave Springs Trib. in Delaware County, Oklahoma. It was built in 1930 and reconstructed in 2010, so it is 95 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 5 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 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 37 ft (11.3 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN4690 (2166C)
CrossesCave Springs Trib.
Location6.5SE of Grove
RouteCounty Highway N4690
CountyDelaware County
StateOklahoma
Coordinates36.56086, -94.64771
Functional classRural Major 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99.1 US tons
Inventory rating59.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length37 ft (11.3 m)
Longest span18 ft (5.5 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4690 (2166C) over Cave Springs Trib. built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2010.

What condition is N4690 (2166C) over Cave Springs Trib. 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 February 2023.

How much traffic does N4690 (2166C) over Cave Springs Trib. carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4690 (2166C) over Cave Springs Trib.?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.5 m) and a deck 27 ft wide.

Who owns N4690 (2166C) over Cave Springs Trib.?

It is owned by the County Highway Agency.