US Bridges

Thurman Lake RD over Meramec Rvr

Good

Crawford County, Missouri · S 27 T 38 N R 5 W · Structure no. 36091

Built
2020
5 years old
Condition
Good
inspected February 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
140 ft
2 main spans
Daily traffic
15
2023 count
Owner
County
County Highway Agency

About this bridge

Thurman Lake RD over Meramec Rvr is a prestressed concrete box beam or girders - single or spread carrying Thurman Lake RD over Meramec Rvr in Crawford County, Missouri. It was built in 2020, so it is 5 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 18 by 2043. The structure is 140 ft (42.7 m) long and 25 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesThurman Lake RD
CrossesMeramec Rvr
LocationS 27 T 38 N R 5 W
RouteCounty Highway 67
Coordinates37.97775, -91.45658
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating72.4 US tons
Inventory rating55.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length140 ft (42.7 m)
Longest span70 ft (21.3 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic18 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Thurman Lake RD over Meramec Rvr built?

It was built in 2020, making it 5 years old in 2025.

What condition is Thurman Lake RD over Meramec Rvr 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 February 2025.

How much traffic does Thurman Lake RD over Meramec Rvr carry?

About 15 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Thurman Lake RD over Meramec Rvr?

The structure is 140 ft (42.7 m) long with a longest span of 70 ft (21.3 m) and a deck 25 ft wide.

Who owns Thurman Lake RD over Meramec Rvr?

It is owned by the County Highway Agency.