US Bridges

CO RD NW 750 over Br N Fk Blackwater

Good

Johnson County, Missouri · S 17 T 47 N R 27 W · Structure no. 28253

Built
1998
27 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
48
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD NW 750 over Br N Fk Blackwater is a steel stringer/multi-beam or girder carrying CO RD NW 750 over Br N Fk Blackwater in Johnson County, Missouri. It was built in 1998, so it is 27 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 48 vehicles a day, roughly 10% of them trucks, projected to reach 77 by 2043. The structure is 45 ft (13.7 m) long and 23 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCO RD NW 750
CrossesBr N Fk Blackwater
LocationS 17 T 47 N R 27 W
RouteCounty Highway 71
Coordinates38.88052, -93.91822
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 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 evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating64.5 US tons
Inventory rating38.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span42 ft (12.8 m)
Deck width23 ft (7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2023)
Projected traffic77 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 NW 750 over Br N Fk Blackwater built?

It was built in 1998, making it 27 years old in 2025.

What condition is CO RD NW 750 over Br N Fk Blackwater in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does CO RD NW 750 over Br N Fk Blackwater carry?

About 48 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD NW 750 over Br N Fk Blackwater?

The structure is 45 ft (13.7 m) long with a longest span of 42 ft (12.8 m) and a deck 23 ft wide.

Who owns CO RD NW 750 over Br N Fk Blackwater?

It is owned by the County Highway Agency.