US Bridges

Spring RD over Unknown Br

Fair

Pulaski County, Missouri · S 19 T 35 N R 13 W · Structure no. 18266

Built
1990
35 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
29 ft
2 main spans
Daily traffic
150
2024 count
Owner
County
County Highway Agency

About this bridge

Spring RD over Unknown Br is a concrete continuous slab carrying Spring RD over Unknown Br in Pulaski County, Missouri. It was built in 1990, so it is 35 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 195 by 2044. The structure is 29 ft (8.8 m) long and 21 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesSpring RD
CrossesUnknown Br
LocationS 19 T 35 N R 13 W
RouteCounty Highway 179
CountyPulaski County
StateMissouri
Coordinates37.75202, -92.39927
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length29 ft (8.8 m)
Longest span13 ft (4 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2024)
Projected traffic195 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 Spring RD over Unknown Br built?

It was built in 1990, making it 35 years old in 2025.

What condition is Spring RD over Unknown 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 January 2024.

How much traffic does Spring RD over Unknown Br carry?

About 150 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Spring RD over Unknown Br?

The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m) and a deck 21 ft wide.

Who owns Spring RD over Unknown Br?

It is owned by the County Highway Agency.