US Bridges

Jewell Ave over Br of Blackwater R

Poor

Saline County, Missouri · S 27 T 49 N R 21 W · Structure no. 24313

Built
1923
102 years old
Condition
Poor
inspected March 2024
Type
Slab
Concrete
Length
101 ft
5 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Jewell Ave over Br of Blackwater R is a concrete slab carrying Jewell Ave over Br of Blackwater R 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 4 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.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 101 ft (30.8 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesJewell Ave
CrossesBr of Blackwater R
LocationS 27 T 49 N R 21 W
RouteCounty Highway 476
Coordinates38.99368, -93.20397
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
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 statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadOther
Structure length101 ft (30.8 m)
Longest span20 ft (6.1 m)
Deck width23 ft (7.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$483,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Jewell Ave over Br of Blackwater R built?

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

What condition is Jewell Ave over Br of Blackwater R 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 Br of Blackwater R carry?

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

How long is Jewell Ave over Br of Blackwater R?

The structure is 101 ft (30.8 m) long with a longest span of 20 ft (6.1 m) and a deck 23 ft wide.

Who owns Jewell Ave over Br of Blackwater R?

It is owned by the County Highway Agency.