US Bridges

CO RD SW 771 over Norris CR

FairPosted for load

Johnson County, Missouri · S 27 T 44 N R 27 W · Structure no. 24855

Built
1900
125 years old, rebuilt 1988
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
79 ft
3 main spans
Daily traffic
110
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD SW 771 over Norris CR is a steel stringer/multi-beam or girder carrying CO RD SW 771 over Norris CR in Johnson County, Missouri. It was built in 1900 and reconstructed in 1988, so it is 125 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 110 vehicles a day, roughly 10% of them trucks, projected to reach 176 by 2043. The structure is 79 ft (24.1 m) long and 23 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCO RD SW 771
CrossesNorris CR
LocationS 27 T 44 N R 27 W
RouteCounty Highway 565
CountyJohnson County
StateMissouri
Coordinates38.5716, -93.89349
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating33.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length79 ft (24.1 m)
Longest span44 ft (13.4 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2023)
Projected traffic176 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 CO RD SW 771 over Norris CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1988.

What condition is CO RD SW 771 over Norris 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 December 2024.

How much traffic does CO RD SW 771 over Norris CR carry?

About 110 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD SW 771 over Norris CR?

The structure is 79 ft (24.1 m) long with a longest span of 44 ft (13.4 m) and a deck 23 ft wide.

Who owns CO RD SW 771 over Norris CR?

It is owned by the County Highway Agency.