US Bridges

N Sara RD over Coal Creek

Fair

Grady County, Oklahoma · 1.0E; 0.4N JCT SH-4/SH-37 · Structure no. 202570000000000

Built
1982
43 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
351
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Sara RD over Coal Creek is a prestressed concrete stringer/multi-beam or girder carrying N Sara RD over Coal Creek in Grady County, Oklahoma. It was built in 1982, so it is 43 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 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 351 vehicles a day, roughly 5% of them trucks, projected to reach 562 by 2042. The structure is 103 ft (31.4 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesN Sara RD
CrossesCoal Creek
Location1.0E; 0.4N JCT SH-4/SH-37
RouteCity Street N2970
CountyGrady County
StateOklahoma
Coordinates35.29682, -97.70628
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating108.2 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span97 ft (29.6 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2022)
Projected traffic562 by 2042
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$508,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N Sara RD over Coal Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is N Sara RD over Coal 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 September 2024.

How much traffic does N Sara RD over Coal Creek carry?

About 351 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N Sara RD over Coal Creek?

The structure is 103 ft (31.4 m) long with a longest span of 97 ft (29.6 m) and a deck 29 ft wide.

Who owns N Sara RD over Coal Creek?

It is owned by the City or Municipal Highway Agency.