US Bridges

County RD 739 over Long Br

Fair

Monroe County, Missouri · S 30 T 53 N R 9 W · Structure no. 13363

Built
1992
33 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
120 ft
3 main spans
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 739 over Long Br is a prestressed concrete continuous tee beam carrying County RD 739 over Long Br in Monroe County, Missouri. It was built in 1992, so it is 33 years old, younger than the Missouri average of 45.1 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 31 by 2043. The structure is 120 ft (36.6 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 739
CrossesLong Br
LocationS 30 T 53 N R 9 W
RouteCounty Highway 36
CountyMonroe County
StateMissouri
Coordinates39.34369, -91.94953
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span50 ft (15.2 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic31 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 739 over Long Br built?

It was built in 1992, making it 33 years old in 2025.

What condition is County RD 739 over Long Br 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 June 2024.

How much traffic does County RD 739 over Long Br carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 739 over Long Br?

The structure is 120 ft (36.6 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.

Who owns County RD 739 over Long Br?

It is owned by the County Highway Agency.