US Bridges

E1790 over Diamond Spring Br.

Fair

Johnston County, Oklahoma · 2 S & .2 E of Connerville · Structure no. 244400000000000

Built
1998
27 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

E1790 over Diamond Spring Br. is a prestressed concrete tee beam carrying E1790 over Diamond Spring Br. in Johnston County, Oklahoma. It was built in 1998, so it is 27 years old, younger than the Oklahoma average of 47.8 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 30 vehicles a day, roughly 15% of them trucks, projected to reach 48 by 2042. The structure is 55 ft (16.9 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesE1790
CrossesDiamond Spring Br.
Location2 S & .2 E of Connerville
RouteCounty Highway E1790
CountyJohnston County
StateOklahoma
Coordinates34.41922, -96.63214
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating38 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.9 m)
Longest span55 ft (16.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic48 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$376,000
NavigationNo navigation control on waterway

Frequently asked questions

When was E1790 over Diamond Spring Br. built?

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

What condition is E1790 over Diamond Spring Br. 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 April 2023.

How much traffic does E1790 over Diamond Spring Br. carry?

About 30 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is E1790 over Diamond Spring Br.?

The structure is 55 ft (16.9 m) long with a longest span of 55 ft (16.8 m) and a deck 28 ft wide.

Who owns E1790 over Diamond Spring Br.?

It is owned by the County Highway Agency.