US Bridges

N Rock Ch RD 797 over Dry Creek

Good

Lincoln County, Missouri · S 24 T 48 N R 2 W · Structure no. 28163

Built
1998
27 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
148 ft
2 main spans
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

N Rock Ch RD 797 over Dry Creek is a steel stringer/multi-beam or girder carrying N Rock Ch RD 797 over Dry Creek in Lincoln 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2043. The structure is 148 ft (45.1 m) long and 24 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesN Rock Ch RD 797
CrossesDry Creek
LocationS 24 T 48 N R 2 W
RouteCounty Highway 283
Coordinates38.90919, -91.09053
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length148 ft (45.1 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.2 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic80 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 N Rock Ch RD 797 over Dry Creek built?

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

What condition is N Rock Ch RD 797 over Dry Creek 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 April 2024.

How much traffic does N Rock Ch RD 797 over Dry Creek carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is N Rock Ch RD 797 over Dry Creek?

The structure is 148 ft (45.1 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns N Rock Ch RD 797 over Dry Creek?

It is owned by the County Highway Agency.