US Bridges

Co. Rd. N4550 over Will Rogers Tp I-44 Und

Fair

Ottawa County, Oklahoma · 65.88 MI NE of Tp Gate · Structure no. 138800000000000

Built
1957
68 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
177 ft
4 main spans
Daily traffic
5,000
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

Co. Rd. N4550 over Will Rogers Tp I-44 Und is a steel stringer/multi-beam or girder carrying Co. Rd. N4550 over Will Rogers Tp I-44 Und in Ottawa County, Oklahoma. It was built in 1957, so it is 68 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 5,000 vehicles a day, roughly 15% of them trucks, projected to reach 8,000 by 2042. The structure is 177 ft (53.9 m) long and 22 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCo. Rd. N4550
CrossesWill Rogers Tp I-44 Und
Location65.88 MI NE of Tp Gate
RouteCounty Highway N4550
CountyOttawa County
StateOklahoma
Coordinates36.77943, -94.89008
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating56.2 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length177 ft (53.9 m)
Longest span49 ft (14.9 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2022)
Projected traffic8,000 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Co. Rd. N4550 over Will Rogers Tp I-44 Und built?

It was built in 1957, making it 68 years old in 2025.

What condition is Co. Rd. N4550 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. N4550 over Will Rogers Tp I-44 Und carry?

About 5,000 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Co. Rd. N4550 over Will Rogers Tp I-44 Und?

The structure is 177 ft (53.9 m) long with a longest span of 49 ft (14.9 m) and a deck 22 ft wide.

Who owns Co. Rd. N4550 over Will Rogers Tp I-44 Und?

It is owned by the State Toll Authority.