US Bridges

Big Danger Rd. over I 40-SEC 21

Fair

Johnson County, Arkansas · 2.0 M East of SH 103 · Structure no. 000000000003861

Built
1965
60 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
221 ft
4 main spans
Daily traffic
374
2006 count
Owner
State
State Highway Agency

About this bridge

Big Danger Rd. over I 40-SEC 21 is a steel stringer/multi-beam or girder carrying Big Danger Rd. over I 40-SEC 21 in Johnson County, Arkansas. It was built in 1965, so it is 60 years old, older than the Arkansas 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 6 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 374 vehicles a day, roughly 1% of them trucks, projected to reach 1,003 by 2026. The structure is 221 ft (67.4 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesBig Danger Rd.
CrossesI 40-SEC 21
Location2.0 M East of SH 103
RouteCounty Highway 40
CountyJohnson County
StateArkansas
Coordinates35.45173, -93.43421
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length221 ft (67.4 m)
Longest span67 ft (20.4 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic374 (2006)
Projected traffic1,003 by 2026
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Big Danger Rd. over I 40-SEC 21 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Big Danger Rd. over I 40-SEC 21 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 February 2024.

How much traffic does Big Danger Rd. over I 40-SEC 21 carry?

About 374 vehicles per day (2006 count), of which roughly 1% are trucks.

How long is Big Danger Rd. over I 40-SEC 21?

The structure is 221 ft (67.4 m) long with a longest span of 67 ft (20.4 m) and a deck 29 ft wide.

Who owns Big Danger Rd. over I 40-SEC 21?

It is owned by the State Highway Agency.