US Bridges

U.S. 59 NB over Grand Lake/Sailboat

Fair

Delaware County, Oklahoma · 19.1 MI N SH20 · Structure no. 247910000000000

Built
2000
25 years old
Condition
Fair
inspected August 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
3,043 ft
25 main spans
Daily traffic
5,150
2022 count
Owner
State
State Highway Agency

About this bridge

U.S. 59 NB over Grand Lake/Sailboat is a prestressed concrete continuous segmental box girder carrying U.S. 59 NB over Grand Lake/Sailboat in Delaware 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 5,150 vehicles a day, roughly 16% of them trucks, projected to reach 8,240 by 2042. The structure is 3,043 ft (927.5 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesU.S. 59 NB
CrossesGrand Lake/Sailboat
Location19.1 MI N SH20
RouteU.S. Route 59
CountyDelaware County
StateOklahoma
Coordinates36.63831, -94.81444
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating47.8 US tons
Inventory rating28.8 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans25
Design loadHS 20
Structure length3,043 ft (927.5 m)
Longest span122 ft (37.2 m)
Deck width41 ft (12.5 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,150 (2022)
Projected traffic8,240 by 2042
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$10.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. 59 NB over Grand Lake/Sailboat built?

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

What condition is U.S. 59 NB over Grand Lake/Sailboat 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 U.S. 59 NB over Grand Lake/Sailboat carry?

About 5,150 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is U.S. 59 NB over Grand Lake/Sailboat?

The structure is 3,043 ft (927.5 m) long with a longest span of 122 ft (37.2 m) and a deck 41 ft wide.

Who owns U.S. 59 NB over Grand Lake/Sailboat?

It is owned by the State Highway Agency.