US Bridges

Bluespring RD over Lit Gravois CR

Poor

Miller County, Missouri · S 7 T 40 N R 15 W · Structure no. 17643

Built
1930
95 years old
Condition
Poor
inspected January 2025
Type
Slab
Concrete
Length
45 ft
8 main spans
Daily traffic
45
2023 count
Owner
County
County Highway Agency

About this bridge

Bluespring RD over Lit Gravois CR is a concrete slab carrying Bluespring RD over Lit Gravois CR in Miller County, Missouri. It was built in 1930, so it is 95 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 45 vehicles a day, roughly 10% of them trucks, projected to reach 77 by 2043. The structure is 45 ft (13.7 m) long and 16 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesBluespring RD
CrossesLit Gravois CR
LocationS 7 T 40 N R 15 W
RouteCounty Highway 158
CountyMiller County
StateMissouri
Coordinates38.23708, -92.62961
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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJanuary 2025
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadOther
Structure length45 ft (13.7 m)
Longest span4 ft (1.2 m)
Deck width16 ft (5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2023)
Projected traffic77 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local 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$366,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bluespring RD over Lit Gravois CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is Bluespring RD over Lit Gravois CR 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 January 2025.

How much traffic does Bluespring RD over Lit Gravois CR carry?

About 45 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Bluespring RD over Lit Gravois CR?

The structure is 45 ft (13.7 m) long with a longest span of 4 ft (1.2 m) and a deck 16 ft wide.

Who owns Bluespring RD over Lit Gravois CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.