US Bridges

30th ST over Branch

Fair

Marion County, Missouri · S 31 T 57 N R 4 W · Structure no. 18444

Built
1999
26 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
2,084
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

30th ST over Branch is a concrete culvert carrying 30th ST over Branch in Marion County, Missouri. It was built in 1999, so it is 26 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 2,084 vehicles a day, roughly 10% of them trucks, projected to reach 2,813 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

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Carries30th ST
CrossesBranch
LocationS 31 T 57 N R 4 W
RouteCity Street 0
CountyMarion County
StateMissouri
Coordinates39.68722, -91.38856
Functional classUrban 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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,084 (2023)
Projected traffic2,813 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 30th ST over Branch built?

It was built in 1999, making it 26 years old in 2025.

What condition is 30th ST over Branch 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 March 2023.

How much traffic does 30th ST over Branch carry?

About 2,084 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 30th ST over Branch?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns 30th ST over Branch?

It is owned by the City or Municipal Highway Agency.