US Bridges

Old HWY 8 over Owl CR

Fair

St. Francois County, Missouri · S 3176 T 36 N R 4 E · Structure no. 20744

Built
1960
65 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
63 ft
3 main spans
Daily traffic
750
2023 count
Owner
County
County Highway Agency

About this bridge

Old HWY 8 over Owl CR is a concrete slab carrying Old HWY 8 over Owl CR in St. Francois County, Missouri. It was built in 1960, so it is 65 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 750 vehicles a day, roughly 10% of them trucks, projected to reach 1,125 by 2043. The structure is 63 ft (19.2 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOld HWY 8
CrossesOwl CR
LocationS 3176 T 36 N R 4 E
RouteCounty Highway 273
CountySt. Francois County
StateMissouri
Coordinates37.86312, -90.55535
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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length63 ft (19.2 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2023)
Projected traffic1,125 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Old HWY 8 over Owl CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is Old HWY 8 over Owl 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 December 2024.

How much traffic does Old HWY 8 over Owl CR carry?

About 750 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Old HWY 8 over Owl CR?

The structure is 63 ft (19.2 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Old HWY 8 over Owl CR?

It is owned by the County Highway Agency.