US Bridges

N2770 over Bills Creek

Fair

Grady County, Oklahoma · .6S US277 & 6W US81 · Structure no. 272560000000000

Built
2002
23 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
77 ft
1 main span
Daily traffic
75
2022 count
Owner
County
County Highway Agency

About this bridge

N2770 over Bills Creek is a steel stringer/multi-beam or girder carrying N2770 over Bills Creek in Grady County, Oklahoma. It was built in 2002, so it is 23 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2042. The structure is 77 ft (23.5 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN2770
CrossesBills Creek
Location.6S US277 & 6W US81
RouteCounty Highway N2770
Coordinates34.9255, -98.05804
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span75 ft (22.9 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2022)
Projected traffic120 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$533,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2770 over Bills Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is N2770 over Bills 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 October 2024.

How much traffic does N2770 over Bills Creek carry?

About 75 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2770 over Bills Creek?

The structure is 77 ft (23.5 m) long with a longest span of 75 ft (22.9 m) and a deck 27 ft wide.

Who owns N2770 over Bills Creek?

It is owned by the County Highway Agency.