US Bridges

3546C over Pennington Creek

FairPosted for load

Johnston County, Oklahoma · 2.5 N & 2 E of Mill Creek · Structure no. 064240000000000

Built
1938
87 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
55
2022 count
Owner
County
County Highway Agency

About this bridge

3546C over Pennington Creek is a steel stringer/multi-beam or girder carrying 3546C over Pennington Creek in Johnston County, Oklahoma. It was built in 1938, so it is 87 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. Its operating status is: posted for load restriction.

It carries about 55 vehicles a day, roughly 10% of them trucks, projected to reach 88 by 2042. The structure is 52 ft (15.8 m) long and 14 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
Carries3546C
CrossesPennington Creek
Location2.5 N & 2 E of Mill Creek
RouteCounty Highway 3546C
CountyJohnston County
StateOklahoma
Coordinates34.44117, -96.79376
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating10 US tons
Inventory rating6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span47 ft (14.3 m)
Deck width14 ft (4.4 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2022)
Projected traffic88 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 3546C over Pennington Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is 3546C over Pennington 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 May 2023.

How much traffic does 3546C over Pennington Creek carry?

About 55 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 3546C over Pennington Creek?

The structure is 52 ft (15.8 m) long with a longest span of 47 ft (14.3 m) and a deck 14 ft wide.

Who owns 3546C over Pennington Creek?

It is owned by the County Highway Agency.