US Bridges

N3920 over Montezuma Cr.Trib.

FairPosted for load

Okmulgee County, Oklahoma · 1.8 N 62B 3.0 E Okf C/L · Structure no. 060980000000000

Built
1936
89 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
36 ft
3 main spans
Daily traffic
700
2022 count
Owner
County
County Highway Agency

About this bridge

N3920 over Montezuma Cr.Trib. is a concrete continuous slab carrying N3920 over Montezuma Cr.Trib. in Okmulgee County, Oklahoma. It was built in 1936, so it is 89 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 700 vehicles a day, roughly 10% of them trucks, projected to reach 1,120 by 2042. The structure is 36 ft (11 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesN3920
CrossesMontezuma Cr.Trib.
Location1.8 N 62B 3.0 E Okf C/L
RouteCounty Highway N3920
CountyOkmulgee County
StateOklahoma
Coordinates35.46442, -96.03305
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating13 US tons
Inventory rating7.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length36 ft (11 m)
Longest span10 ft (3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2022)
Projected traffic1,120 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$285,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3920 over Montezuma Cr.Trib. built?

It was built in 1936, making it 89 years old in 2025.

What condition is N3920 over Montezuma Cr.Trib. 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 September 2024.

How much traffic does N3920 over Montezuma Cr.Trib. carry?

About 700 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3920 over Montezuma Cr.Trib.?

The structure is 36 ft (11 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns N3920 over Montezuma Cr.Trib.?

It is owned by the County Highway Agency.