US Bridges

Co. Rd. N4270 over Will Rogers Tp I-44 Und

Fair

Mayes County, Oklahoma · 7 MI W 1.4 S Adair CO · Structure no. 136730000000000

Built
1956
69 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
232 ft
4 main spans
Daily traffic
100
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

Co. Rd. N4270 over Will Rogers Tp I-44 Und is a steel stringer/multi-beam or girder carrying Co. Rd. N4270 over Will Rogers Tp I-44 Und in Mayes County, Oklahoma. It was built in 1956, so it is 69 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 232 ft (70.7 m) long and 30 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCo. Rd. N4270
CrossesWill Rogers Tp I-44 Und
Location7 MI W 1.4 S Adair CO
RouteCounty Highway 4918
CountyMayes County
StateOklahoma
Coordinates36.41634, -95.401
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.6 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length232 ft (70.7 m)
Longest span61 ft (18.6 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 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
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Co. Rd. N4270 over Will Rogers Tp I-44 Und built?

It was built in 1956, making it 69 years old in 2025.

What condition is Co. Rd. N4270 over Will Rogers Tp I-44 Und 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 July 2023.

How much traffic does Co. Rd. N4270 over Will Rogers Tp I-44 Und carry?

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

How long is Co. Rd. N4270 over Will Rogers Tp I-44 Und?

The structure is 232 ft (70.7 m) long with a longest span of 61 ft (18.6 m) and a deck 30 ft wide.

Who owns Co. Rd. N4270 over Will Rogers Tp I-44 Und?

It is owned by the State Toll Authority.