County Line Bridge is a historic structure located in a rural area west of Columbus Junction, United States. The Louisa County Board of Supervisors approved the petition of Thomas Anwyl in April 1893 to build a bridge over Long Creek on the Louisa-Washington county line, they awarded a $1,174 contract to the Gillette-Herzog Manufacturing Company of Minneapolis to build two bridges. The second span was the Gipple's Quarry Bridge over Buffington Creek in Elm Grove Township; the bridge span is supported by cast iron columns that were manufactured by the Cast Iron Pile and Bridge Company of Keosauqua, Iowa. The steel components were rolled by Gillette-Herzog in Pittsburgh; the pony truss bridge is typical of those built in the same era in Iowa, like Gipple's Quarry Bridge it has an unusual lower chord configuration with end panels that slope downward from the bearing shoes to the center panels. It has subsequently been abandoned; the bridge was listed on the National Register of Historic Places in 1998

The Steelers–Titans rivalry is a National Football League rivalry between the Pittsburgh Steelers and the Tennessee Titans that dates back to the 1970s when the Steelers and then-Houston Oilers played in the AFC Central. The two teams were realigned into separate divisions for the 2002 NFL season, however matchups are still considered heated between the two teams; when the American Football League completed its merger with the NFL in 1970, three NFL teams were given a $3 million payment to join the former AFL teams to form the American Football Conference. While the Baltimore Colts and the Cleveland Browns joined the new conference, the Steelers were hesitant to join until Steelers owner Art Rooney told his son Dan Rooney that the payment plus keeping the rivalry with the Browns was important, although it was losing its longstanding rivalry with the Philadelphia Eagles. Additionally, a rivalry with the Bengals made geographic sense for the team. While the teams that would form the National Football Conference struggled to agree on a realignment proposal, the AFC teams found an alignment.

The Oilers, who were part of the AFL East before the merger because it was further east than the Kansas City Chiefs, were placed in the AFC Central with the Bengals and Steelers, being the only team in the division that wasn't in or near Ohio. The Oilers were placed in the division at the insistence of Dan Rooney, much to the chagrin of Al Davis; the Oilers and Steelers became acquainted with each other right away, when the two teams met in the season opener of the 1970 NFL season in Pittsburgh, a 19–7 Oilers victory in the first-ever NFL game at Three Rivers Stadium. The two teams met again four weeks at the Astrodome in Houston, a 7–3 Steelers victory; the opening season win would be the only time. At 78 meetings overall, the Oilers/Titans franchise has played the Steelers more than any other team in its history; the rivalry didn't pick up steam, as the Steelers were starting to become a powerhouse in the NFL during the 1970s while the Oilers collapsed completely. However, the Oilers became a contender in the latter part of the decade and challenged the Steelers to division and conference supremacy.

Unlike other rivalries such as the one between the Steelers and Browns, based on the close proximity between the two teams and was more fan-driven, the rivalry between the Steelers and the Oilers/Titans franchise was driven on personal hatred between the two teams, much like the concurrent rivalry the Steelers had with the Oakland Raiders or the rivalry with the Baltimore Ravens decades later. The two teams met in the AFC Championship Game two years in a row at Three Rivers Stadium, with the Steelers dominating the "Luv Ya Blue" Oilers 34–5; the Steelers were expecting a closer encounter in the 1979 AFC Championship Game, marred by a controversial call in the third quarter when quarterback Dan Pastorini threw a pass to wide receiver Mike Renfro in the end zone. It was ruled incomplete, despite television replays showing Renfro having possession of the ball with both feet in the end zone; the Oilers had to settle for a field goal, the Steelers would go on to win 27–13. Both teams hit hard times once the 1980s hit, with the Oilers sinking to the bottom of the division and the Steelers hit with the retirement of several key players from the dynasty years, only remaining competitive due to the AFC Central as a whole being weak during this time.

By 1987, the Oilers began to have sustained playoff appearances again under quarterback Warren Moon and controversial coach Jerry Glanville while the Steelers were still rebuilding from their mid-1980s dropoff. However, the two teams would clinch a wild card spot in the playoffs in 1989, the only year Chuck Noll would win NFL Coach of the Year. During a regular season matchup in Pittsburgh earlier in the year, following the game the stoic Noll in post game handshake grabbed Glanville and told him he'd better watch out or he'd get jumped on; this was in reaction to Glanville's earlier comments on how the Oilers field was the'house of pain' and his prediction that his players would intentionally hurt the Steelers. In the Wild Card round, the Steelers, despite having been swept by the Oilers in the regular season, defeated the Oilers in overtime 26–23. Glanville would be fired from the Oilers after the game; the Oilers were the class of the division for the early 1990s, winning two division championships, while the Steelers were becoming a threat again under head coach Bill Cowher.

The two would exchange division titles in 1992 and 1993 before the Steelers became the dominant team in the AFC Central due to Oilers owner Bud Adams going through with his threats to blow up the team and rebuild if it didn't go to the Super Bowl. During this time, both teams were fighting for new stadiums. While the Steelers would get one in Heinz Field, the Oilers couldn't get a new stadium built in Houston and announced they were moving to Nashville for the 1998 NFL season; the Steelers were one of six teams to vote against the proposal o