US Bridges

Bi 20 over Spring Branch

Good

Callahan County, Texas · 0.05 MI E of US 283 · Structure no. 080300000712054

Built
1939
86 years old, rebuilt 1947
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
70 ft
9 main spans
Daily traffic
260
2013 count
Owner
State
State Highway Agency

About this bridge

Bi 20 over Spring Branch is a concrete culvert carrying Bi 20 over Spring Branch in Callahan County, Texas. It was built in 1939 and reconstructed in 1947, so it is 86 years old, older than the Texas average of 44.4 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 260 vehicles a day, roughly 19% of them trucks, projected to reach 370 by 2033. The structure is 70 ft (21.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBi 20
CrossesSpring Branch
Location0.05 MI E of US 283
RouteState Highway 20
CountyCallahan County
StateTexas
Coordinates32.39364, -99.38599
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans9
Design loadH 15
Structure length70 ft (21.3 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2013)
Projected traffic370 by 2033
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bi 20 over Spring Branch built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1947.

What condition is Bi 20 over Spring Branch 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 February 2023.

How much traffic does Bi 20 over Spring Branch carry?

About 260 vehicles per day (2013 count), of which roughly 19% are trucks.

How long is Bi 20 over Spring Branch?

The structure is 70 ft (21.3 m) long with a longest span of 7 ft (2.1 m).

Who owns Bi 20 over Spring Branch?

It is owned by the State Highway Agency.