US Bridges

3446C Major over Monument Creek

Fair

Jefferson County, Oklahoma · 0.9 MI E US 81 · Structure no. 126740000000000

Built
1952
73 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
96
2022 count
Owner
County
County Highway Agency

About this bridge

3446C Major over Monument Creek is a concrete culvert carrying 3446C Major over Monument Creek in Jefferson County, Oklahoma. It was built in 1952, so it is 73 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 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 96 vehicles a day, roughly 15% of them trucks, projected to reach 154 by 2042. The structure is 24 ft (7.3 m) long and 30 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Carries3446C Major
CrossesMonument Creek
Location0.9 MI E US 81
RouteCounty Highway 3420
Coordinates34.24553, -97.94864
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2022)
Projected traffic154 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 3446C Major over Monument Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is 3446C Major over Monument 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 3446C Major over Monument Creek carry?

About 96 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 3446C Major over Monument Creek?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 30 ft wide.

Who owns 3446C Major over Monument Creek?

It is owned by the County Highway Agency.