US Bridges

Deer Run RD 646 over Hurricane CR

Fair

Lincoln County, Missouri · S 16 T 50 N R 2 E · Structure no. 17582

Built
1962
63 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
200
2023 count
Owner
County
County Highway Agency

About this bridge

Deer Run RD 646 over Hurricane CR is a steel stringer/multi-beam or girder carrying Deer Run RD 646 over Hurricane CR in Lincoln County, Missouri. It was built in 1962, so it is 63 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 200 vehicles a day, roughly 10% of them trucks, projected to reach 320 by 2043. The structure is 27 ft (8.2 m) long and 19 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesDeer Run RD 646
CrossesHurricane CR
LocationS 16 T 50 N R 2 E
RouteCounty Highway 156
CountyLincoln County
StateMissouri
Coordinates39.09634, -90.78966
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width19 ft (5.7 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic320 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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$185,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Deer Run RD 646 over Hurricane CR built?

It was built in 1962, making it 63 years old in 2025.

What condition is Deer Run RD 646 over Hurricane CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Deer Run RD 646 over Hurricane CR carry?

About 200 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Deer Run RD 646 over Hurricane CR?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 19 ft wide.

Who owns Deer Run RD 646 over Hurricane CR?

It is owned by the County Highway Agency.