US Bridges

Jewell Ave over Blackwater Rvr

PoorPosted for load

Saline County, Missouri · S 34 T 49 N R 21 W · Structure no. 24315

Built
1923
102 years old
Condition
Poor
inspected March 2024
Type
Truss - Thru
Steel
Length
376 ft
2 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Jewell Ave over Blackwater Rvr is a steel truss - thru carrying Jewell Ave over Blackwater Rvr in Saline County, Missouri. It was built in 1923, so it is 102 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 376 ft (114.6 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesJewell Ave
CrossesBlackwater Rvr
LocationS 34 T 49 N R 21 W
RouteCounty Highway 476
CountySaline County
StateMissouri
Coordinates38.9905, -93.20408
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.9 US tons
Inventory rating7.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+7 approach)
Design loadOther
Structure length376 ft (114.6 m)
Longest span121 ft (36.8 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Jewell Ave over Blackwater Rvr built?

It was built in 1923, making it 102 years old in 2025.

What condition is Jewell Ave over Blackwater Rvr in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Jewell Ave over Blackwater Rvr carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Jewell Ave over Blackwater Rvr?

The structure is 376 ft (114.6 m) long with a longest span of 121 ft (36.8 m) and a deck 21 ft wide.

Who owns Jewell Ave over Blackwater Rvr?

It is owned by the County Highway Agency.