US Bridges

Rt Aa S over Miller Br

Fair

Vernon County, Missouri · S 3 T 37 N R 29 W · Structure no. 3250

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
635
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Aa S over Miller Br is a concrete continuous culvert carrying Rt Aa S over Miller Br in Vernon County, Missouri. It was built in 1981, so it is 44 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 635 vehicles a day, roughly 11% of them trucks, projected to reach 889 by 2044. The structure is 38 ft (11.5 m) long. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesRt Aa S
CrossesMiller Br
LocationS 3 T 37 N R 29 W
RouteState Highway 0AA
CountyVernon County
StateMissouri
Coordinates38.01467, -94.11447
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length38 ft (11.5 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic635 (2024)
Projected traffic889 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rt Aa S over Miller Br built?

It was built in 1981, making it 44 years old in 2025.

What condition is Rt Aa S over Miller 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 March 2024.

How much traffic does Rt Aa S over Miller Br carry?

About 635 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt Aa S over Miller Br?

The structure is 38 ft (11.5 m) long with a longest span of 12 ft (3.7 m).

Who owns Rt Aa S over Miller Br?

It is owned by the State Highway Agency.