US Bridges

Rt Z S over Blue Spring CR

Fair

Miller County, Missouri · S 35 T 41 N R 16 W · Structure no. 4420

Built
1960
65 years old
Condition
Fair
inspected November 2024
Type
Culvert
Steel
Length
30 ft
7 main spans
Daily traffic
186
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Z S over Blue Spring CR is a steel culvert carrying Rt Z S over Blue Spring CR in Miller County, Missouri. It was built in 1960, so it is 65 years old, older 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 5 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 186 vehicles a day, roughly 21% of them trucks, projected to reach 344 by 2044. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesRt Z S
CrossesBlue Spring CR
LocationS 35 T 41 N R 16 W
RouteState Highway 0Z
CountyMiller County
StateMissouri
Coordinates38.27318, -92.65728
Functional classRural Minor 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans7
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span3 ft (0.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic186 (2024)
Projected traffic344 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 Z S over Blue Spring CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is Rt Z S over Blue Spring CR 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 November 2024.

How much traffic does Rt Z S over Blue Spring CR carry?

About 186 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is Rt Z S over Blue Spring CR?

The structure is 30 ft (9.1 m) long with a longest span of 3 ft (0.9 m).

Who owns Rt Z S over Blue Spring CR?

It is owned by the State Highway Agency.